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Table 3 Known-groups validity by comparing mean percentage scores in knowledge and practice regarding FH between PCP-PG-Qual and PCP-noPG-Qual

From: Validity and reliability of an adapted questionnaire measuring knowledge, awareness and practice regarding familial hypercholesterolaemia among primary care physicians in Malaysia

KAP domain Mean (± SD) percentage score of PCP-PG-Qual n = 31 Mean (± SD) percentage score of PCP-noPG-Qual n = 99 Mean difference in percentage score (95% CI) t valuea (df)b p-valuec
Knowledge 53.5 (13.99) 35.9 (11.79) 17.54
(12.52, 22.57)
6.90
(128)
 < 0.001
Practice 69.2 (17.62) 54.4 (19.28) 14.74
(7.05, 22.44)
3.79
(128)
 < 0.001
  1. Abbreviations: KAP, knowledge, awareness and practice; SD, standard deviation; df, degree of freedom; CI, confidence interval; n, number; PCP-PG-Qual, primary care physicians with postgraduate qualification; PCP-noPG-Qual, primary care physicians without postgraduate qualification;
  2. a Independent t-test was used to compare means as the data were normally distributed. The null hypothesis was rejected as the calculated t value > critical t value
  3. b df: degrees of freedom of the critical value of t
  4. c Significant p < 0.05