Table 1 Percentages of the genotypic (n) and the mutant [1014F] allelic (95% confidence interval) frequencies of the kdr gene in Anopheles gambiae s.l. populations by period and location using a layered 3 × 3 × 3 contingency table

Boukoumbé

BIRS

27

37% (10)^a

63% (17)^a

0% (0)

69% (56–81%)

DIRS

31

74% (23)^b

26% (8)^b

0% (0)

87% (79–95%)

WIRS

277

87% (240)^b

6% (17)^c

7% (20)

90% (87–92%)

Péhunco

BIRS

28

32% (9)^a

68% (19)^a

0% (0)

66% (54–78%)

DIRS

33

79% (26)^b

21% (7)^b

0% (0)

89% (82–97%)

WIRS

554

87% (481)^b

7% (37)^c

7% (36)

90% (88–92%)

Toucountouna

BIRS

26

50% (13)^a

42% (11)^a

8% (2)^a

71% (59–83%)

DIRS

36

69% (25)^a,b

28% (10)^a

3% (1)^a

83% (75–92%)

WIRS

80

84% (67)^b

8% (6)^b

9% (7)^a

88% (82–93%)

Total

BIRS

81

40% (32)^a

58% (47)^a

3% (2)^a

69% (61–76%)

DIRS

100

74% (74)^b

25% (25)^b

1% (1)^a

87% (82–91%)

WIRS

911

87% (788)^c

7% (60)^c

7% (63)^a

90% (88–91%)