Table 2.

Frequencies of the Kdr L1014F mutation in the 4 study districts pre- and post intervention in Benin

Districts	Periods	Total	Genotypes Kdr L1014F			F(Kdr L1014F)	x2-value	df	p value
			RR	RS	SS
Ifangni	Pre-intervention	40	0	2	38	0.03a	186.36	1	< 0.0001
	Post-intervention	73	67	5	1	0.95b
Sakété	Pre-intervention	30	24	6	0	0.90a	0.406	1	0.523
	Post-intervention	79	69	10	0	0.94a
Pobè	Pre-intervention	30	11	13	6	0.58a	10.28	1	0.0013
	Post-intervention	80	55	19	6	0.81b
Kétou	Pre-intervention	30	25	5	0	0.92a	0.0105	1	0.918
	Post-intervention	88	77	10	1	0.93a
Total	Pre-intervention	130	60	26	44	0.56a	138.67	1	< 0.0001
	Post-intervention	320	268	44	8	0.91b

^a,bValues with different superscripts pre and post intervention within a same district are significantly different (p <  0.05)