Table 5 The number of P. argentipes collected in low, medium and high risk-levels households after DDT-IRS and SP-IRS rounds in Lawapur Mahnar village, Vaishali district (Bihar)
Risk group | 2 weeks Mean (95% CI) | 4 weeks Mean (95% CI) | 12 weeks Mean (95% CI) | Overall Mean (95% CI) | Total count (%) |
|---|---|---|---|---|---|
DDT | |||||
 Low | 0.8 (0–2) | 1.3 (0–4) | 1.0 (1–3) | 1.0 (0–4) | 12 (4.4) |
 Medium | 4.5 (1–7) | 8.8 (6–14) | 13.5 (6–23) | 8.9 (1–23) | 107 (39.5) |
 High | 7.3 (2–12) | 11.3 (6–17) | 19.5 (11–27) | 12.7 (2–27) | 152 (56.1) |
SP | |||||
 Low | 0 (0–0) | 0.3 (0–1) | 1.0 (0–2) | 0.4 (0–2) | 5 (3.1) |
 Medium | 0.3 (0–1) | 3.3 (1–6) | 12.5 (7–16) | 5.3 (0–16) | 64 (40.3) |
 High | 0.5 (0–2) | 4.8 (3–8) | 17.3 (10–26) | 7.5 (0–26) | 90 (56.6) |