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. 2022 Dec 14;19(24):16753.
doi: 10.3390/ijerph192416753.

Rasch Modelling to Assess Psychometric Validation of the Knowledge about Tuberculosis Questionnaire (KATUB-Q) for the General Population in Indonesia

Ikhwan Yuda Kusuma  1   2   3 , Deny Nugroho Triwibowo  2 , Arik Dian Eka Pratiwi  4 , Dian Ayu Eka Pitaloka  1   5
Affiliations

Rasch Modelling to Assess Psychometric Validation of the Knowledge about Tuberculosis Questionnaire (KATUB-Q) for the General Population in Indonesia

Ikhwan Yuda Kusuma et al. Int J Environ Res Public Health. .

Abstract

Objective: This study aims to validate and evaluate the psychometric properties of the knowledge about tuberculosis questionnaire (KATUB-Q) for the general population in Indonesia.

Methods: The KATUB-Q consists of three domains: general knowledge, transmission, and treatment, with 20 dichotomous items. Rasch analysis through WINSTEPS was used.

Results: A total of 504 respondents from 34 provinces in Indonesia completed the survey. Based on the model fit statistics, 3 misfit items were deleted and 17 items were used. Item and person reliability, as well as Cronbach's Alpha values were 0.99, 0.63, and 0.73, respectively, which means they achieved the minimum acceptable limit of 0.6. Based on the results, Indonesia's Person ability analysis indicated a high level of knowledge. KATUB-Q has no significant bias item based on sex found in the differential item functioning analysis.

Conclusion: KATUB-Q has 17 items with a valid and reliable instrument; hence, it can be used to measure the knowledge about TB in the general population.

Practice implications: The unidimensional structure of the core items of the KATUB-Q provides empirical evidence for using the sum score of the items in practice to evaluate the effectiveness of TB education in the general population.

Keywords: Rasch analysis; knowledge; tuberculosis; validation.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 2
Figure 2
Wright map (item–person correlation). The right-hand side shows the 17 items of the questionnaire, from the easiest (K14, bottom indicator) to the most difficult items (K16 and K7, top indicator); the left-hand side locates the participant’s knowledge level measured along with the items. The Ms on the right and left-hand sides indicate the mean item and the mean person measures, respectively. The closer the location of M is to both measures, the better [31]. “#” represents 8 items and “.” represents 1–7 participants.
Figure 3
Figure 3
Histogram chart of person knowledge ability about tuberculosis.
Figure 4
Figure 4
Differential item functioning based on sex.
Figure 1
Figure 1
Bubble chart of item fit order based on Infit MNSQ; Y axis is JMLE measure; X axis is item fit mean square; overfit (x >1.50); outfit (0.50 < x < 1.50). Each bubble represents an item whose size is proportional to the standard error of item difficulty calibration. Well-fitting items are close to the central vertical line.
See this image and copyright information in PMC

References

    1. Global Tuberculosis Report 2021. 2021. [(accessed on 19 September 2022)]. Available online: https://www.who.int/publications/i/item/9789240037021.
    1. Pradipta I.S., Khairunnisa K., Bahar M.A., Kausar M.N., Fitriana E., Ruslami R., Aarnoutse R.E., Abdulah R. Knowledge, attitude and practice of community pharmacy personnel in tuberculosis patient detection: A multicentre cross-sectional study in a high-burden tuberculosis setting. BMJ Open. 2022;12:e060078. doi: 10.1136/bmjopen-2021-060078. - DOI - PMC - PubMed
    1. Mbuthia G.W., Olungah C.O., Ondicho T.G. Knowledge and perceptions of tuberculosis among patients in a pastoralist community in Kenya: A qualitative study. Pan Afr. Med. J. 2018;30:287. doi: 10.11604/pamj.2018.30.287.14836. - DOI - PMC - PubMed
    1. Li Y., Ehiri J., Tang S., Li D., Bian Y., Lin H., Marshall C., Cao J. Factors associated with patient, and diagnostic delays in Chinese TB patients: A systematic review and meta-analysis. BMC Med. 2013;11:156. doi: 10.1186/1741-7015-11-156. - DOI - PMC - PubMed
    1. Fan Y., Zhang S., Li Y., Li Y., Zhang T., Liu W., Jiang H. Development and psychometric testing of the Knowledge, Attitudes and Practices (KAP) questionnaire among student Tuberculosis (TB) Patients (STBP-KAPQ) in China. BMC Infect. Dis. 2018;18:213. doi: 10.1186/s12879-018-3122-9. - DOI - PMC - PubMed

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