KR20190122429A - Item Response Theory Algorithm Based Computerized Screening System for Depressive and Anxiety disorders - Google Patents

Abstract

According to one aspect of the present invention, a system for evaluating depression and anxiety comprises: a user terminal configured to display a login screen, a questionnaire assessment screen, and an evaluation result screen for evaluating depression and anxiety; and a server transmitting data inputted through the questionnaire assessment screen to database (DB) and controlling a depression and anxiety evaluation result generated based on the inputted data to be displayed on the evaluation result screen. Based on the inputted data, a population number of questionnaire assessment items stored in the DB may be adjusted, the questionnaire assessment items may be updated, and a psychological test may be performed under an online platform.

Description

Item Response Theory Algorithm Based Computerized Screening System for Depressive and Anxiety disorders}

The present invention relates to psychological evaluation software for evaluating depression and anxiety and underlying item response theory algorithms. More specifically, it relates to computerized depression anxiety evaluation software based on the inventive algorithm.

The background technology of the present invention is largely based on two areas. First, it is a technique of psychometric measurement and psychological evaluation based on item response theory algorithm. Traditionally, the Classical Test Theory (CTT) has been used for psychological evaluation and measurement. This classical test theory shows that the test score obtained by an individual has a basic structure consisting of true score and error, and its usefulness has been empirically proved. However, this theory has a limitation that the values of items such as Difficulty and Discriminability vary in the subject group, and the subject's measurement depends on the group. In addition, there are many limitations in the manufacture and practical use of the test by considering that the error acting in estimating an individual's ability by observation score is the same for all individuals.

The test theory developed to overcome this limitation is the Item Response Theory (IRT). In item response theory, the estimation of a subject's potential characteristics is independent of the items answered by the subject, and the item parameters are estimated independently of the subject's sample. Therefore, the test made based on the item response theory can overcome the disadvantages of the tests based on the classical test theory. This item response theory was first developed in pedagogy and is currently widely used in tests such as TOEFL and SAT.

However, it has not been widely used in the field of psychological evaluation. All of the evaluation tools such as BDI-II, CES-D, GAD-7, and BAI, which are the most widely used depressive evaluation tools, have the problem of being made based on classical test theory.

The second technique is the development of computerized psychological evaluation software based on the Item Response Theory algorithm. The service using the internet network has been widely used in society, but its use is very limited in the area of psychological evaluation. Most of the psychological evaluations currently used are based on paper-based evaluations, and require high professional labor costs in the scoring, interpretation, and utilization, and require only a small number of people. have.

Accordingly, an object of the present invention is to develop an algorithm for selecting items based on an item response theory and to calculate depression and anxiety scores specific to each individual according to the algorithm.

In addition, the problem to be solved in the present invention is to provide a computerized depression anxiety evaluation system based on the item response theory algorithm that can calculate individual depression and anxiety scores based on the algorithm for selecting items based on the item response theory. It aims to do it.

According to an aspect of the present invention to achieve the above or another object, the depression / anxiety evaluation system, user terminal configured to display a login screen, a questionnaire evaluation screen and the evaluation result screen for the depression / anxiety evaluation; And a server configured to transmit data input through the questionnaire evaluation screen to a database, and to control a depression / anxiety evaluation result generated based on the input data to be displayed on the evaluation result screen. Based on the collected data, a population number of survey evaluation items stored in the DB may be adjusted, the survey evaluation items may be updated, and a psychological test may be performed under an online platform.

Compared with conventional depressive / anxiety assessment tools (systems), the assessment tools developed through the present invention can: 1) avoid using screening tests that are inaccurate or paying royalties abroad, thereby reducing social costs. I think it will contribute. 2) Psychological testing under the online platform will facilitate scoring and interpretation, and facilitate the use of data in large clinical and research scenes. 3) Screening for disability, rather than in-depth psychological diagnosis. As many people as possible can easily approach and implement the screening tool to meet the purpose of the target, it also has the advantage of lowering the high labor cost that was previously required for psychological testing. 4) By applying the item response theory, the depression and anxiety scores with less error can be calculated by considering the items selected in consideration of individual depression anxiety level and the characteristics of each item and the examinee responding to the item. 5) By computerizing these processes, we expect that more people will be able to obtain more accurate screening results in a timely manner. 6) It is expected that this invention will contribute to reducing the social cost of delayed treatment by laying the foundation for those who need treatment at the optimal time.

 The present invention overcomes the limitations of the evaluation tools used in the past, and is a Korean-type depression and anxiety evaluation tool with Korean standards, rather than a draft version of a foreign evaluation tool, so that the evaluation can be carried out reliably at a lower cost and the data are usefully used. It is expected to be.

Figure 1 shows a detailed configuration of the depression / anxiety evaluation system according to the present invention.
2 shows a web environment login screen and an app environment login screen according to the present invention.
3 shows a web environment (questionnaire) evaluation screen and an app environment (questionnaire) evaluation screen according to the present invention.
4 shows an evaluation result presentation screen according to the present invention.
5 shows a flowchart of a method for evaluating depressive anxiety according to the present invention.

The above-described features and effects of the present invention will become more apparent from the following detailed description taken in conjunction with the accompanying drawings, and thus, those skilled in the art to which the present invention pertains may easily implement the technical idea of the present invention. Could be. As the inventive concept allows for various changes and numerous embodiments, particular embodiments will be illustrated in the drawings and described in detail in the text. However, this is not intended to limit the present invention to a specific disclosure, it should be understood to include all modifications, equivalents, and substitutes included in the spirit and scope of the present invention. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

In describing each drawing, like reference numerals are used for like elements.

Terms such as first and second may be used to describe various components, but the components should not be limited by the terms. The terms are used only for the purpose of distinguishing one component from another.

For example, without departing from the scope of the present invention, the first component may be referred to as the second component, and similarly, the second component may also be referred to as the first component. The term “and / or” includes any combination of a plurality of related items or any item of a plurality of related items.

Unless defined otherwise, all terms used herein, including technical or scientific terms, have the same meaning as commonly understood by one of ordinary skill in the art.

Terms such as those defined in the commonly used dictionaries should be construed as having meanings consistent with the meanings in the context of the related art, and shall not be construed in ideal or excessively formal meanings unless expressly defined in this application. Should not.

The suffixes "module", "block", and "unit" for components used in the following description are given or mixed in consideration of ease of specification, and do not have distinct meanings or roles by themselves. .

Hereinafter, with reference to the accompanying drawings, preferred embodiments of the present invention will be described to be easily carried out by those of ordinary skill in the art. In the following description of the embodiments of the present invention, when it is determined that the detailed description of the related known functions or known configurations may unnecessarily obscure the subject matter of the present invention, the detailed description thereof will be omitted.

In relation to the present invention, the depression and anxiety related evaluation tools such as BDI-II and BAI, which are typically used in Korea, are all tools that revise and validate the depression / anxiety scales developed overseas. As a result, large-scale costs for large-scale national research projects and clinical sites are not only paid as royalties abroad, but their use is limited.

In addition, the existing paper-based self-reported tests were not easily available to the general public, and it was very difficult to receive proper interpretation of the test results. Given that depressive and anxiety disorders have the highest prevalence among mental disorders, and that these diseases are closely related to suicide, the early stages of depressive and anxiety disorders are selected to provide appropriate intervention at the optimal time. This will make a significant contribution to protecting the individual's mental health and reducing social costs. However, the evaluation tools developed overseas or paper-based evaluation methods, which have been utilized so far, have obvious limitations in solving the above problems.

Hereinafter, the depression / anxiety evaluation system according to the present invention will be described. Specifically, it relates to a computerized depression anxiety evaluation tool and system based on the item response theory algorithm. In this regard, Figure 1 shows a detailed configuration of the depression / anxiety evaluation system according to the present invention. Referring to FIG. 1, the depression / anxiety evaluation system includes a user terminal 100, a server 200, a scoring system 250, and a database (DB) 300. In addition, the depression / anxiety evaluation system may interact with the user's mobile terminal 150.

The user terminal 100 is configured to display a login screen, a questionnaire evaluation screen, and an evaluation result screen for depression / anxiety evaluation.

The server 200 transmits the data input through the questionnaire evaluation screen to the database DB, and controls the depression / anxiety evaluation result generated based on the input data to be displayed on the evaluation result screen. In this case, a parameter of a questionnaire evaluation item stored in the DB 300 may be adjusted based on the input data, and the questionnaire evaluation item may be updated.

On the other hand, the questionnaire evaluation questions may be composed of a plurality of categories corresponding to depression, suicide, mania, Generalized Anxiety Disorder, social phobia, panic disorder and phobia. Here, the parameters of the second questionnaire evaluation items of the second category corresponding to the suicide, mania, general anxiety disorder, social phobia, panic disorder and phobia may be adjusted based on the data input from the first category corresponding to depression. have. In addition, the contents of the second questionnaire evaluation item of the second category may be changed. For example, if the data input from the first category corresponding to depression indicates that the phenomenon of "anxiety disorder" is high, the parameter of the second questionnaire evaluation question related to "anxiety disorder" is increased, and Various questionnaire evaluation questions can be presented. On the other hand, if it is determined that the phenomenon of "panic disorder" is high, the parameters of the second questionnaire evaluation question related to "panic disorder" may be increased, and various questionnaire evaluation items corresponding thereto may be suggested.

In this regard, the questionnaire evaluation items and the corresponding categories will be described in more detail as follows. The Online Depression Anxiety Assessment Tool based on the Item Response Theory consists of seven evaluation modules. Each assessment module is: 1) depression, 2) suicide, 3) mania, 4) general anxiety disorder, 5) social panic, 6) panic disorder, 7) phobia (specific, open space). Depression related questions consisted of 12 questions, 4 questions related to suicide, 2 questions related to mania, 11 questions related to general anxiety disorder, 4 questions related to panic disorder, 3 questions related to panic disorder, and 2 questions related to phobia. The questions above are based on a literature review and sub-area selection, ② face validity verification, ③ focus group interviews, and ④ expert advisory meetings. 383 questions related to depressive disorders and 273 questions related to anxiety disorders. These are questions selected from the test questions. Item selection and final item composition can be made in the form of QUADAS-2 (Quality Assessment of Diagnostic Accuracy Studies-2), a tool for measuring the quality of diagnostic assessment, and in this process, Item Response Theory ) Is available.

If the items produced in this way are loaded on the online website, the example screen is as follows. In this regard, Figure 2 shows a web environment login screen and an app environment login screen according to the present invention. As illustrated in FIG. 2, the web environment login screen may be provided as a computer screen, and the app environment login screen may be provided as a mobile terminal screen. The web environment login screen and the app environment login screen may be configured to input gender and age information of the corresponding user. On the other hand, in principle, such personal information is not input as possible, and only minimum information is input for calculating the final score based on age and gender norms.

 3 shows a web environment (questionnaire) evaluation screen and an app environment (questionnaire) evaluation screen according to the present invention. It may proceed from the web environment login screen of FIG. 2 to the next screen of FIG. 3 and the web environment (survey) evaluation screen.

Referring to FIG. 3, the web environment / app environment (survey) evaluation screen may proceed to a screen for answering an item. In this case, the evaluation item may be configured using a Likert scale method of five points.

In this regard, when the response to the question is completed, the corresponding data may be transmitted to the main database of the test program, and the evaluation score of the user may be calculated and displayed on the screen through the scoring system 250 based on the existing question response theory. The details of the evaluation score calculation process and the screen display process are as follows.

The scoring system 250 may be implemented within the server 200 or may be implemented separately from the server 200. The scoring system 250 is configured to calculate a first score based on the input data in the first category, and calculate a second score based on the second data input in the second category.

The server 200 may generate a depression / anxiety evaluation result based on the first score and the second score received from the scoring system 250. In addition, the server 200 may control to display the generated depression / anxiety evaluation result on the evaluation result screen.

On the other hand, the server 200 is new in the second category by using the computerized Depression / Anxiety Assessment Tool and the computerized Depression / Anxiety Assessment Tool in the first category and the second data input in the second category The parameters of the assessment items can be adjusted. In addition, the server 200 may change the contents of the new evaluation items in the second category.

On the other hand, the server 200 displays the scores for a plurality of categories corresponding to the depression, anxiety, mania, general anxiety disorder, social fear, panic disorder and phobia on the evaluation result screen, The depression / anxiety evaluation result may be displayed on a normal distribution corresponding to the age group of the corresponding user. In this regard, Figure 4 shows an evaluation result presentation screen according to the present invention. As described above, the evaluation result presentation screen, the depression / anxiety evaluation results are displayed scores for a plurality of categories corresponding to the depression, suicide, mania, general anxiety disorder, social phobia, panic disorder and phobia. In addition, the depression / anxiety evaluation result may be displayed on a normal distribution corresponding to the age group of the corresponding user by using the evaluation result presentation screen.

The data entered in this way is added to the database to calculate the item parameters according to the new item response theory. Therefore, the more users of this service, the more data it becomes possible to accurately predict and diagnose the level of depression and anxiety. In addition, the collected depression and anxiety scores are one large-scale data that can be used as valuable data for future national research and policy directions.

In addition, the server 200 may determine the current depression / anxiety state of the corresponding user based on scores, depression / anxiety evaluation results, facial expression, schedule, and weather of the corresponding user in a plurality of categories. .

Meanwhile, the server 200 may recommend the following content when there is no schedule of the corresponding user based on the determined current depression / anxiety state and the schedule of the corresponding user. That is, when there is no schedule of the corresponding user, the server 200 may control such that information on content that can alleviate the current depression / anxiety state is popped up on the mobile terminal 150 of the corresponding user. .

In the above, the computerized depression anxiety evaluation system based on the item response theory algorithm according to the present invention has been described. On the other hand, such a computerized depression anxiety evaluation system can be performed through the following procedure. In this regard, Figure 5 shows a flowchart of a method for evaluating depression anxiety according to the present invention. In this regard, the depression anxiety evaluation method may be mainly performed by the server 200 of FIG. 1, and may cooperate with the scoring system 250 or the database 300. The test result may be provided to the user terminal 100 or the mobile terminal 150 of FIG. 1.

Referring to FIG. 5, the test participant basic information input process (S110), depression, anxiety evaluation tool implementation process (S120), DB update and item parameter estimation process (S130) according to a database transmission, and a evaluation process through a scoring system ( S140) and the inspection result providing process (S150).

In the inspection participant basic information input process (S110), a login screen for depression / anxiety evaluation and a basic information input screen for questionnaire evaluation are displayed, and accordingly, login information is input from a user terminal (or mobile terminal) and a questionnaire evaluation is performed. Enter basic information for

In the depression and anxiety evaluation tool implementation process (S120), a questionnaire evaluation screen for depression / anxiety evaluation is displayed and a response is received from a user terminal (or a mobile terminal).

In the DB update and item parameter estimation process (S130) according to the database transmission, the data input through the questionnaire evaluation screen is transmitted to the database (DB). In addition, a population number of questionnaire evaluation items stored in the DB may be adjusted based on the input data, and the questionnaire evaluation items may be updated.

In the test result providing process (S150), a depression / anxiety evaluation result is generated based on data (response) input from the user terminal (or mobile terminal), and is controlled to be displayed on the user terminal (or mobile terminal).

Meanwhile, the contents described with reference to FIGS. 1 to 4 may be applicable to the depressive anxiety evaluation method of FIG. 5. Accordingly, in the present invention, the computerized depression anxiety evaluation system based on the item response theory algorithm and the depression anxiety evaluation method using the same were examined.

On the other hand, if the Internet network, computers, and smart devices are popularized at the present time, computerized inspections can be implemented and distributed on the online flat to solve the problems raised above. In addition, based on the Item Response Theory, the optimal items are selected to have high validity and reliability, and at the same time, they are composed of the items that show the optimum sensitivity and specificity. Depression and anxiety scores are calculated by considering both the characteristics of each item and the examinee's characteristics of each item, and the individual's depression and anxiety can be measured with the minimum error with the minimum items. The computerized depression anxiety evaluation tool based on the item response theory algorithm developed through the present invention is expected to be widely used in clinical field as well as large-scale research projects. In addition, it is expected to contribute to improving the mental health of individuals and to reduce social costs by avoiding the use of inaccurate screening tests or the payment of overseas royalties.

According to at least one embodiment of the present invention, there is an advantage in that an algorithm for selecting items based on the item response theory is developed, and the depression and anxiety scores specific to the individual can be calculated according to the algorithm.

In addition, according to at least one embodiment of the present invention, a computerized depression anxiety evaluation system based on the item response theory algorithm that can calculate individual depression and anxiety scores based on an algorithm for selecting items based on the item response theory Can provide.

According to the software implementation, each component as well as the procedures and functions described herein may be implemented as separate software modules. Each of the software modules may perform one or more functions and operations described herein. Software code may be implemented in software applications written in a suitable programming language. The software code may be stored in a memory and executed by a controller or a processor.

100: user terminal
150: mobile terminal
200: server
250: scoring system
300: database

Claims (8)

In the depression / anxiety rating system,
A user terminal configured to display a login screen, a questionnaire evaluation screen, and an evaluation result screen for depression / anxiety evaluation; And
And a server for transmitting data input through the questionnaire evaluation screen to a database and controlling the depression / anxiety evaluation result generated based on the input data to be displayed on the evaluation result screen.
Depression / anxiety evaluation system, characterized in that the population (population number) of the questionnaire evaluation questions stored in the DB is adjusted based on the input data, and the questionnaire evaluation questions are updated. The method of claim 1,
The questionnaire evaluation questions are composed of a plurality of categories corresponding to depression, suicide, mania, Generalized Anxiety Disorder, social phobia, panic disorder and phobia,
The parameter of the second questionnaire evaluation item of the second category corresponding to the suicide, mania, general anxiety disorder, social phobia, panic disorder and phobia is adjusted based on the input data in the first category corresponding to the depression and Depression / anxiety evaluation system, characterized in that the contents of the second questionnaire evaluation questions are changed. The method of claim 2,
The second questionnaire evaluation questions.
Preset assessment items; And
Responding to the predetermined question by a plurality of users and new assessment items generated based on the age and gender of the plurality of users,
The server selects a matching evaluation item among the new evaluation items based on the input data and the user's age and gender in the first category, and among the selected new evaluation items and the predetermined evaluation items. Depression / anxiety evaluation system, characterized in that for displaying the selected evaluation items on the questionnaire evaluation screen. The method of claim 2,
And a scoring system for calculating a first score based on the input data in the first category, and calculating a second score based on the second data input in the second category.
The server may generate the depression / anxiety evaluation result based on the first score and the second score received from the scoring system, and control to display the generated depression / anxiety evaluation result on the evaluation result screen. Depression, anxiety assessment system. The method of claim 3,
The server,
By using the inputted data in the first category, the second data inputted in the second category, and the computerized Depression / Anxiety Assessment Tool, Adjusting parameters and changing the content of the new assessment items, depression / anxiety assessment system. The method of claim 5,
The server,
A third category subsequent to the second category, using the inputted data in the first category, the second data inputted in the second category, and a computerized Depression / Anxiety Assessment Tool A depressive / anxiety assessment system, characterized by adjusting the parameters of the new assessment items and changing the content. The method of claim 4, wherein
The server displays the scores for each category corresponding to the depression, suicide, mania, general anxiety disorder, social fear, panic disorder and phobia on the evaluation result screen. Anxiety evaluation results are displayed on a normal distribution corresponding to the user's age range,
Depression, characterized in that for determining the current depression / anxiety state of the user based on scores for each of the plurality of categories, the result of the depression / anxiety evaluation and the facial expression (facial expression), schedule and weather of the user / Anxiety rating system. The method of claim 7, wherein
The server,
Based on the determined current depressive / anxiety state and the schedule of the corresponding user, information about content that can alleviate the current depressed / anxiety state is popped up on the mobile terminal of the corresponding user when there is no schedule of the corresponding user. A depression / anxiety assessment system that controls to be pop-up.

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