Validation of the diabetes, hypertension and hyperlipidemia (DHL) knowledge instrument in Malaysia

Table 3 Knowledge scores of the professional and patient group at test and retest (by domain)

	Test	Retest	Test-retest reliability [A] versus [B]			Discriminant validity [A] versus [E]
	Patients (n = 77) [A]	Patients (n = 61)# [B]	Wilcoxon Signed Rank test [C]	Spearman's rho Correlation Coefficient** [D]	Professionals (n = 40) [E]	Mann Whitney U test [F]
Domain	Mean ± SD	Mean ± SD	p-value		Mean ± SD	p-value
Diabetes	85.97 ± 19.21	91.15 ± 15.29	0.318	0.391	95.50 ± 9.59	0.002*
Hypertension	64.41 ± 23.76	63.61 ± 20.50	0.018*	0.490	92.50 ± 9.81	< 0.001*
Hyperlipidaemia	56.62 ± 23.26	85.97 ± 19.21	0.018*	0.460	93.50 ± 11.45	< 0.001*
Medication	79.22 ± 20.14	79.51 ± 17.08	0.359	0.552	97.19 ± 5.29	< 0.001*
General issues	82.60 ± 20.09	81.97 ± 19.90	0.226	0.559	88.50 ± 17.48	0.100
Total knowledge score	74.35 ± 14.88	78.04 ± 12.09	0.215	0.617	93.84 ± 6.47	< 0.001*

#16 patients were excluded from the test-retest as they did not come for their follow-up visit
*Statistically significant at p < 0.05
**All correlations were statistically significant at p < 0.01

ISSN: 1471-2288