Data were analysed using SPSS Statistical Software Version 20 (SPSS Inc. Chicago, USA). The domains were identified as reported elsewhere . The widely used principal component analysis (PCA) was used as the extraction method to undertake exploratory factor analysis; and varimax rotation was used to rotate the factors to better fit the data . Convergent validity to assess if the survey items converged to measure a construct was also conducted using the correlation coefficient matrix method . The percentage of total variance by each factor was calculated and pattern matrix was used to identify the domains. Kiaser–Meyer–Olkin (KMO) sampling adequacy and Bartlett’s tests (to assess the strength of the relationship among the variables) were also applied to the construct . The reliability of the inventory and its subscales were tabulated using Cronbach’s alpha. In addition to descriptive statistics, the Chi-square test was adopted to assess the association between variables. Participant responses to each of the items were tabulated as mean ± SEM. Comparison of means, when required, was accomplished using MedCalc software . The study was approved by the regional research ethics committee (AAMDHREC 12/55).