Table 1. Bioassays for CRR.

Strain	n	LD50 (95%FL) (ng fly-1)	Slope (SE)	RR	χ2 (df)	P
CSS	120	1.06 (0.89–1.26)	2.33 (0.23)	1.00	1.96 (4)	0.98
CRR	120	699,339.95 (558,744.43–1066,737.76)	2.45 (0.45)	659,754.67	4.40 (4)	0.92
CRR	120	723,399.50 (595,314.33–1164,885.62)	1.88 (0.22)	682,452.36	3.97 (4)	0.89
CRR	120	725,592.92 (562,392.06–1055,234.54)	2.31 (0.36)	684,521.62	4.88 (4)	0.91

Note: n: number of houseflies tested in each bioassay including control, RR: Resistance Ratio = LD₅₀ of the RR/SS, df: Degree of freedom.