Estimating Skin Cancer Risk: Evaluating Mobile Computer-Adaptive Testing

doi:10.2196/jmir.4736

CNU IR > College of Smart Living > Dept. of Hospital and Health (including master's program) > Periodical Articles > Item 310902800/30933

Please use this identifier to cite or link to this item: https://ir.cnu.edu.tw/handle/310902800/30933

Title:	Estimating Skin Cancer Risk: Evaluating Mobile Computer-Adaptive Testing
Authors:	Djaja, Ngadiman Janda, Monika Olsen, Catherine M. Whiteman, David C. Chien, Tsair-Wei
Contributors:	Queensland Univ Technol, Inst Hlth & Biomed Innovat, Sch Publ Hlth & Social Work Queensland Univ Technol, Inst Hlth & Biomed Innovat, Inst Hlth & Biomed Innovat Natl Hlth & Med Res Council, Ctr Res Excellence Sun & Hlth CRESH QIMR Berghofer Med Res Inst Chi Mei Med Ctr, Res Dept Chia Nan Univ Pharm & Sci, Dept Hosp & Hlth Care Adm
Keywords:	computer adaptive testing skin cancer risk scale non adaptive test Rasch analysis partial credit model
Date:	2016-01
Issue Date:	2018-01-18 11:38:13 (UTC+8)
Publisher:	Jmir Publications, Inc
Abstract:	Background: Response burden is a major detriment to questionnaire completion rates. Computer adaptive testing may offer advantages over non-adaptive testing, including reduction of numbers of items required for precise measurement. Objective: Our aim was to compare the efficiency of non-adaptive (NAT) and computer adaptive testing (CAT) facilitated by Partial Credit Model (PCM)-derived calibration to estimate skin cancer risk. Methods: We used a random sample from a population-based Australian cohort study of skin cancer risk (N=43,794). All 30 items of the skin cancer risk scale were calibrated with the Rasch PCM. A total of 1000 cases generated following a normal distribution (mean [SD] 0 [1]) were simulated using three Rasch models with three fixed-item (dichotomous, rating scale, and partial credit) scenarios, respectively. We calculated the comparative efficiency and precision of CAT and NAT (shortening of questionnaire length and the count difference number ratio less than 5% using independent t tests). Results: We found that use of CAT led to smaller person standard error of the estimated measure than NAT, with substantially higher efficiency but no loss of precision, reducing response burden by 48%, 66%, and 66% for dichotomous, Rating Scale Model, and PCM models, respectively. Conclusions: CAT-based administrations of the skin cancer risk scale could substantially reduce participant burden without compromising measurement precision. A mobile computer adaptive test was developed to help people efficiently assess their skin cancer risk.
Relation:	Journal of Medical Internet Research, v.18 n.1, e22
Appears in Collections:	[Dept. of Hospital and Health (including master's program)] Periodical Articles

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