Table 1 Baseline characteristics of houses across the study arms

	Category	All n (%)	mCL n (%)	mCR n (%)	mCV n (%)	mMC n (%)	P values
Wall type	Mud	39 (97.5)	10 (100.0)	10 (100.0)	9 (90.0)	10 (100.0)	0.380
Wall type	Cement	1 (2.5)	0	0	1 (10.0)	0	0.380
Roof type	Corrugated iron	40 (100)	10 (100.0)	10 (100.0)	10 (100.0)	10 (100.0)	1.000
Windows	0	27 (67.5)	8 (80.0)	5 (50.0)	8 (80.0)	6 (60.0)	0.178
	1	4 (10.0)	1 (10.0)	1 (10.0)	0	2 (20.0)
	2	6 (15.0)	1 (10.0)	4 (40.0)	0	1 (10.0)
	3	3 (7.5)	0	0	2 (20.0)	1 (10.0)
Eaves	Open	39	10 (100.0)	10 (100.0)	9 (90.0)	10 (100.0)	0.380
Eaves	Partially open	1	0	0	1 (10.0)	0	0.380
Rooms	1	11 (27.5)	4 (40.0)	2 (20.0)	3 (30.0)	2 (20.0)	0.752
	2	25 (62.5)	6 (60.0)	7 (70.0)	5 (50.0)	7 (70.0)
	3	4 (10.0)	0	1 (10.0)	2 (20.0)	1 (10.0)

Values show the number and percent distribution by wall type, roof type, number of windows, eaves type and number of rooms. Study arms are defined as follows: mCL, control group (no modification); mCR, houses with the cool-roof modification; mCV, houses with the cross-ventilation modification; mMC, houses with the mat-ceiling modification. Statistical significance was assessed at α = 0.05.

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