Table 5.

Effect of the PEC program on KAP scores

Scores	Group	(I) Time	(J) Time	Mean difference (I–J)	Standard error	Significancea	95% confidence interval, differencea
							Lower bound	Upper bound
Knowledge	Control	1	2	−0.429	0.285	0.413	−1.129	0.271
			3	−0.371	0.282	0.578	−1.065	0.322
		2	1	0.429	0.285	0.413	−0.271	1.129
			3	0.057	0.227	1.000	−0.501	0.615
		3	1	0.371	0.282	0.578	−0.322	1.065
			2	−0.057	0.227	1.000	−0.615	0.501
	Intervention	1	2	−3.829b	0.285	<0.001	−4.529	−3.129
			3	−3.800b	0.282	<0.001	−4.493	−3.107
		2	1	3.829b	0.285	<0.001	3.129	4.529
			3	0.029	0.227	1.000	−0.529	0.586
		3	1	3.800b	0.282	<0.001	3.107	4.493
			2	−0.029	0.227	1.000	−0.586	0.529
Attitude	Control	1	2	0.200	0.564	1.000	−1.184	1.584
			3	0.886	0.761	0.746	−0.983	2.754
		2	1	−0.200	0.564	1.000	−1.584	1.184
			3	0.686	0.680	0.950	−0.982	2.354
		3	1	−0.886	0.761	0.746	−2.754	0.983
			2	−0.686	0.680	0.950	−2.354	0.982
	Intervention	1	2	−10.543b	0.564	<0.001	−11.927	−9.159
			3	−10.657b	0.761	<0.001	−12.526	−8.788
		2	1	10.543b	0.564	<0.001	9.159	11.927
			3	−0.114	0.680	1.000	−1.782	1.554
		3	1	10.657b	0.761	<0.001	8.788	12.526
			2	0.114	0.680	1.000	−1.554	1.782
Practice	Control	1	2	0.114	0.483	1.000	−1.070	1.299
			3	0.343	0.633	1.000	−1.210	1.896
		2	1	−0.114	0.483	1.000	−1.299	1.070
			3	0.229	0.503	1.000	−1.007	1.464
		3	1	−0.343	0.633	1.000	−1.896	1.210
			2	−0.229	0.503	1.000	−1.464	1.007
	Intervention	1	2	−9.543b	0.483	<0.001	−10.727	−8.358
			3	−8.571b	0.633	<0.001	−10.124	−7.019
		2	1	9.543b	0.483	<0.001	8.358	10.727
			3	0.971	0.503	0.173	−0.264	2.207
		3	1	8.571b	0.633	<0.001	7.019	10.124
			2	−0.971	0.503	0.173	−2.207	0.264

Notes: Based on estimated marginal means.

^aAdjustment for multiple comparisons: Bonferroni.

^bThe mean difference is significant at the 0.05 level. I and J represent different times for post hoc test.

Abbreviations: PEC, participatory eye care; KAP, knowledge, attitude, and practice.