Table 2 Mean level of human IgG response to Anopheles gambiae salivary gland extracts

Primary school

141

0.3

[0.2–0.3]

z = 8.411, P < 0.0001*

Secondary school

59

1.1

[0.9–1.2]

Organic cotton farmers

193

0.2

[0.1–0.3]

t = 3.0123, P = 0.0027*

Conventional cotton farmers

283

0.1

[0.1–0.2]

Urban

200

0.5

[0.4–0.6]

z = −13.811, P < 0.0001*

Rural

476

0.2

[0.1–0.2]

Ages [0–5]

2

0.2

[-0.1–0.6]

F = 41.38, P = 0.0001*

Ages [5–10]

100

0.3

[0.2–0.4]

Ages [10–15]

98

0.8

[0.6–0.9]

Ages [15–20]

11

0.3

[-0.1–0.8]

Ages [20–25]

45

0.2

[0.1–0.3]

Ages ≥ 25

420

0.2

[0.1–0.2]

Male

426

0.3

[0.2–0.3]

z = 1.233, P = 0.2175

Female

250

0.3

[0.2–0.3]