Table 5 Prevalence of anaemia during the three surveys
Surveys | Number of anaemia cases (haemoglobin < 11 g/dl | Mean haemoglobin (g/dl) | Anaemia prevalence | OR (95% CI) |
|---|---|---|---|---|
(95% CI) | Percent (95% CI) | |||
Survey 1: December 2014 | ||||
LLINs + IRS | 199 | 11.74 (11.63–11.85) | 26.8 (23.8–30.1) | 1 |
LLINs only | 220 | 11.52 (11.39–11.64) | 28.2 (25.5–31.9) | 1.09 (0.87–1.37) |
IRS only | 199 | 11.54 (11.42–11.68) | 29.1 (25.8–32.6) | 1.12 (0.89–1.41) |
Control arm | 223 | 11.54 (11.42–11.65) | 28.3 (25.2–31.6) | 1.08 (0.86–1.35) |
All | 841 | 11.59 (11.53–11.65) | 28.2 (26.6–29.8) | |
Survey 2: December 2015 | ||||
LLINs + IRS | 310 | 11.13 (11.01–11.24) | 38.1 (34.8–41.5) | 1 |
LLINs only | 282 | 11.22 (11.10–11.34) | 35.0 (31.8–38.4) | 0.88 (0.72–1.07) |
IRS only | 272 | 11.20 (11.07–11.32) | 38.5 (35.0–42.2) | 1.02 (0.83–1.25) |
Control arm | 287 | 11.38 (11.27–11.50) | 35.8 (32.5–39.2) | 0.91 (0.74–1.11) |
All | 1151 | 11.23 (11.17–1129) | 36.8 (35.1–38.5) | |
Survey 3: December 2016 | ||||
LLINs + IRS | 240 | 11.58 (11.48–11.69) | 29.5 (26.5–32.8) | 1 |
LLINs only | 227 | 11.55 (11.45–11.66) | 31.1 (27.8–34.6) | 1.08 (0.87–1.34) |
IRS only | 192 | 11.62 (11.52–11.73) | 28.8 (25.4–32.2) | 0.96 (0.77–1.20) |
Control | 236 | 11.57 (11.47–11.67) | 29.7 (26.7–33.0) | 1.01 (0.81–1.25) |
All | 895 | 11.58 (11.53–11.63) | 29.8 (28.2–31.4) | |