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To avoid exaggeration of response style and inflation of reliability estimates, each student rated only 1 resident doctor independently after a teaching session with him/her. The medical students anonymously rated the resident doctors once using the questionnaire (FIGURE 1A), which they completed confidentially. In order to eliminate Hawthorne's bias and report the true picture, the resident doctors were not aware that they Lapatinib purchase were being assessed. Domain and total scores were generated and summarized. Content validity of the augmented SFDPQ was assessed using Coverdale's categories (knowledge, attitude, and skills). Construct validity was explored by examining Spearman ranks correlations among the different domains and the global rating scale. Principal component analysis was performed to assess factorial validity of the domains of the SFDPQ. Internal consistency reliability 25 of the domains and the overall scores were calculated using Cronbach's alpha statistics. Floor effect was assessed based on percentage of the respondents who gave a score of < 2 on a 1-to-5 Likert scale, while presence of ceiling effect was evaluated based on percentage of the respondents who gave a score of > 4 on a 1-to-5 Likert scale. A p value of < 0.05 was considered statistically significant. Other a priori criteria set for evaluation of the psychometric attributes of the augmented SFDPQ and its LY294002 clinical trial domains include: To establish convergent validity (a form of construct validity) of the domains, interdomain correlation and correlation between the domain and the global rating scale[25, 26] should be at least moderate (rho > 0.4). To establish internal consistency reliability of the domains, applying Nunnaly's criterion, the Cronbach's alpha must be > 0.70. Twenty resident doctors (15 males and 5 females, 9 junior and 11 senior registrars) were assessed by 64 medical students (49 males, 15 females) on medical posting in 7 units in the Department of Medicine, University College Hospital, Ibadan. Sixty-eight questionnaires were distributed, but only 64 were returned, giving a survey response rate of 94%. The mean completion time for the questionnaire was 15 + 7 minutes. Their S6 Kinase global rating was 65.3 + 15.3%, while the mean total score was 3.25 + 0.60 on a Likert scale of 1 to 5 for the original SFDPQ. None of the 7 items of the new domain showed significant floor or ceiling effect. They demonstrated moderate to strong item-domain correlation (0.54 to 0.70), moderate interitem correlation (0.32 to 0.69) and strong loading (0.64 to 0.85) on 1-factor solution (TABLE 1). As shown in the Scree plot (FIGURE 2), 1-factor solution explained 57.1% of the domain variance with an eigenvalue of 4.00. Results of the Kaiser-Meyer-Olkin (KMO) measure of sampling adequacy showed satisfactory sampling adequacy (0.834), and Bartlett's test of sphericity was significant (p < 0.