Effectiveness of a health education intervention on the use of long-lasting insecticidal nets for the prevention of malaria in pregnant women of Pakistan: a quasi-experimental study

Table 4 Difference in Differences (DID) Estimation with and without confounders

Difference in differences (DID) without confounders
Outcome variables	Baseline (BL)			Post-intervention (PI)			Diff-In-Diff
Outcome variables	Control	Intervention	Diff (BL)	Control	Intervention	Diff (EL)	Diff-In-Diff
Knowledge	5.250^a	5.680	0.430	5.820	10.420	4.600	4.170
SE^b			0.312			0.235	0.390
t value			1.380			19.57	10.68
p value			0.169			0.000***	0.000***
R square	0.54
Use of LLINs	4.530	4.510	− 0.020	4.850	8.190	3.340	3.360
SE^b			0.245			0.194	0.313
t value			− 0.08			17.18	10.75
p value			0.935			0.000***	0.000***
R square	0.59

Difference in differences (DID) with confounders
Knowledge	5.605	5.712	0.107	6.175	10.452	4.277	4.170
SE			0.309			0.309	0.383 \|
t value			0.35 0			13.82	10.90
p value			0.730			0.000***	0.000***
R square	0.58
Confounders	Yes
Use of LLINs	2.785	2.546	− 0.239	3.105	6.226	3.121	3.360
SE			0.250			0.250 \|	0.309
t value			− 0.95			12.48	10.87
p value			0.341			0.000***	0.000***
R square	0.53
Confounders	Yes

ISSN: 1475-2875