Table 3.

Kdr mutation frequency relationship to pyrethroid resistance in different Aedes albopictus populations

Study site	Phenotype	Sample size	Allele frequency (%)			Odds ratio (95% CI)
			Wildtype	F1534C	F1534S	F1534C	F1534S
Haikou	Resistant	61	13.1	26.2	60.7	1.1 (0.6–2.1) NS	0.9 (0.5–1.6)NS
	Susceptible	50	13.0	24.0	63.0
Qiongzhong	Resistant	14	10.7	3.6	85.7	1.5 (0.1–25.3) NS	10.8 (3.2–37.0)***
	Susceptible	21	61.9	2.4	35.7
Sanya	Resistant	36	16.7	26.4	56.9	1.5 (0.7–3.2) NS	3.3 (1.7–6.4)**
	Susceptible	42	52.4	19.0	28.6
Wanning	Resistant	48	30.2	4.2	65.6	0.6 (0.2–2.3) NS	2.4 (1.4–4.2)**
	Susceptible	56	49.1	6.4	44.5
Danzhou	Resistant	75	28.0	2.0	70.0	NA	2.4 (1.5–3.8)***
	Susceptible	76	50.7	0.0	49.3

^** P < 0.01.

^*** P < 0.001.

NS, no significance.