Development of a Shorter Version of the Osteoporosis Knowledge Assessment Tool

Abstract

The aim of the authors of this study was to develop a short version of the Osteoporosis Knowledge Assessment Tool to be used for the target population of young adult Serbian females as an easily implemented add-on questionnaire. The 20-item Osteoporosis Knowledge Assessment Tool was translated and culturally adapted using the Principles of Good Practice for the Translation and Cultural Adaptation Process for Patient-Reported Outcomes Measures. The validation study was conducted on a sample of 250 female students studying at the Faculty of Pharmacy at the University of Belgrade, during a two-month period (November-December 2010). The difficulty index, item-total correlations, and internal consistency were calculated first. Afterward, confirmatory factor analysis was applied to test the structure of the Osteoporosis Knowledge Assessment Tool models and develop a short version. The mean total Osteoporosis Knowledge Assessment Tool score was 8.31 (possible range 0-20). The confirmatory factor analysis fit indices indicated poor fit of the data to the originally hypothesized structure. The confirmatory factor analysis fit indices, difficulty indices, and content validity allowed trimming of the original model and development of a short version with nine items. The average chi-square value for the Osteoporosis Knowledge Assessment Tool short version was 31.79 (p = 0.240, SE = 0.176) with Bollen-Stine bootstrap p = 0.249, Tucker-Lewis Index = 0.925, Comparative Fit Index = 0.944 and Root Mean Square Error of Approximation = 0.027. The Osteoporosis Knowledge Assessment Tool thus had acceptable characteristics and may be used for osteoporosis knowledge assessment.

Osteoporosis-related knowledge among Serbian postmenopausal women

“…Study subjects were surveyed using a valid and reliable questionnaire OKAT with good psychometric properties 5,6 . OKAT covers the core knowledge about osteoporosis and is very useful as a baseline, as well as follow-up measurement when implementing educational interventions.…”

“…A worrying deficit of knowledge with 39.6% of possible maximum score on the OKAT was found in Syrian young adult females students at nursing school in Damascus 7 . A sample of 250 female students studying at the Faculty of Pharmacy at the University of Belgrade revealed also poor knowledge about osteoporosis with 41.55% of possible maximum OKAT score 5 . Baseline levels of osteoporosis knowledge measured using the OKAT were low in Australian women where the tool was origialy implemented.…”

Association between osteoporosis Knowledge and Food Habits in Female University Students of Lahore

“…Osteoporosis Knowledge Assessment Tool (OKAT) [27]. Purpose of the Questionnaire: This questionnaire was used to assess attitude, knowledge, practice and perception to prevent from osteoporosis.…”

Osteoporosis-related knowledge among postmenopausal women attending primary health care services

“…Za procenu nivoa znanja korišćen je OKAT-S (Osteoporosis Knowledge Assessment Tool -Shorter Version) upitnik, koji je validiran za srpsku populaciju. 10 Upitnik obuhvata 9 pitanja o osteoporozi, preventivnom ponašanju, ali i o faktorima rizika kao što su starost, početak i dužina trajanja menopauze, indeks telesne težine (Body Mass Index -BMI), podaci o prelomima, upotreba cigareta, životni stil (aktivni ili sedeći), redovno sunčanje, dopuna kalcijumom i vitaminom D, korišćenje mleka i mlečnih proizvoda. Upitnik je bio anoniman i dobrovoljan, a popunjavan je tokom poseta ispitanica odabranom lekaru zbog razloga koji nisu bili u vezi sa sprovodjenjem studije.…”