ABSTRACT
Objectives: To develop and validate patients’ knowledge, attitudes, and practice instrument for uncomplicated malaria(PKAPIUM).Material and Methods: A draft PKAPIUM scale was developed after the review of relevant literature and malariatreatment guidelines, and six experts validated its content. Monte Carlo simulation principle was followed in arrivingat 300 patients populations whose data were used to reduce the items based on “Kaiser’s eigenevalue-greater-than-onerule.” This was followed by the test of validity and reliability to assess the psychometric properties of the instrument.Results: The items content validity indices (I-CVI) and the scale CVI (S-CVI) using universal agreement (UA) withinexperts (S-CVI/UA) and average CVI (S-CVI/Ave) approaches were good (0.8–1.00), with absence of items’ floor orceiling effects. Twenty-one items were retained in the new scale arranged under four factors with average varianceextracted (AVE) and square root AVE values of 0.58–0.70 and 0.76–0.84, respectively, suggesting convergent anddiscriminant validities. The goodness-of-fit results [Chi-square (CMIN/DF) = 3.07, p = 0.00], standardized root meansquare residual = 0.070, root mean square error approximation = 0.08 confirmed the hypothesized factor structuresof the scale whose internal consistency of Cronbach’s alpha and composite reliability values were 0.74 and 0.82,respectively, and stability of ICC = 0.92 [95% confidence interval : 0.87–0.95, F = 43 (p = 0.51)].Conclusion: The validity and reliability of the PKAPIUM were in acceptable ranges.