Table 4. Prevalence of malaria related outcomes by survey and district.
Values in bold are significantly different between IRS and non-IRS districts at a<0.05 in univariate analyses. All comparisons controlled for clustering within compounds and within enumeration areas.
| Baseline | Post IRS-1 | Post IRS-2 | ||||
|---|---|---|---|---|---|---|
| Non-IRS District | IRS District | Non-IRS District | IRS District | Non-IRS District | IRS District | |
| P. falciparum parasitemia prevalence | ||||||
| <5 | 13.3 (7.5–19.2, 180) | 10.2 (6.5–13.9, 265) | 9.9 (6.3–13.4, 274) | 7.0 (4.1–9.9, 328) | 14.0 (9.8–18.2, 322) | 7.0 (3.7–10.2, 316) |
| 5–14 | 18.3 (12.6–24.0, 306) | 15.5 (11.5–19.4, 466) | 12.6 (9.1–16.1, 438) | 11.6 (8.4–14.9, 498) | 30.4 (25.8–35.1, 575) | 12.4 (9.5–15.2, 615) |
| ≥15 | 3.4 (1.8–5.0, 530) | 4.3 (2.8–5.9, 692) | 2.4 (1.2–3.7, 654) | 2.6 (1.4–3.8, 762) | 8.4 (6.3–10.6, 841) | 1.6 (0.6–2.6, 811) |
| Overall | 9.6 (7.2–12.0, 1016) | 9.1 (7.2–10.9, 1423) | 7.2 (5.5–8.8, 1366) | 6.4 (4.8–7.9, 1588) | 16.7 (14.3–19.2, 1738) | 6.4 (4.9–7.8, 1742) |
| Geometric mean P. falciparum parasite density (per μl) among those with parasites | ||||||
| <5 | 1654 (533–5135, 24) | 2606 (971–6,994, 26) | 2497 (936–6662, 27) | 603 (201–1808, 23) | 3331 (1812–6122, 44) | 1763 (624–4984, 22) |
| 5–14 | 340 (178–649, 56) | 1349 (832–2186, 72) | 424 (241–748, 55) | 335 (230–487, 57) | 501 (382–657, 173) | 478 (312–732, 76) |
| ≥15 | 273 (79–942, 18) | 289 (133–630, 30) | 295 (114–761, 16) | 130 (57–292, 20) | 267 (188–380, 70) | 210 (64–691, 13) |
| Overall | 481 (287–805, 98) | 1,075 (723–1597, 128) | 652 (410–1034, 98) | 317 (220–457, 100) | 575 (459–719, 287) | 562 (382–828, 111) |
| Clinical malaria (P. falciparum parasitemia with fever in the last 24 hours) | ||||||
| <5 | 5.6 (2.3–9.0, 178) | 4.9 (2.4–7.5, 264) | 4.0 (1.7–6.3, 274) | 1.2 (0.0–2.4, 328) | 7.1 (4.2–10.1, 322) | 1.9 (0.4–3.4, 316) |
| 5–14 | 3.6 (1.5–5.7, 303) | 5.0 (2.6–7.4, 460) | 1.6 (0.4–2.8, 438) | 1.4 (0.4–2.4, 498) | 7.8 (5.6–10.1, 575) | 3.7 (2.1–5.4, 615) |
| ≥15 | 1.1 (0.3–2.0, 530) | 1.6 (0.6–2.6, 692) | 0.8 (0.1–1.4, 654) | 0.4 (0.0–0.8, 762) | 2.1 (1.2–3.1, 841) | 0.4 (0.0–0.8, 810) |
| Overall | 2.7 (1.6–3.8, 1011) | 3.3 (2.2–4.4, 1416) | 1.7 (1.0–2.4, 1366) | 0.9 (0.4–1.3, 1588) | 4.9 (3.8–6.1, 1738) | 1.8 (1.1–2.6, 1741) |
| Mean hemoglobin (g/dL) | ||||||
| <5 | 10.7 (10.5–11.0, 176) | 10.8 (10.6–11.0, 259) | 10.7 (10.6–10.9, 274) | 11.4 (11.2–11.5, 328) | 10.4 (10.3–10.6, 322) | 11.3 (11.1–11.4, 316) |
| 5–14 | 12.2 (12.0–12.4, 298) | 12.3 (12.2–12.5, 462) | 12.3 (12.2–12.5, 437) | 12.9 (12.8–13.1, 498) | 12.2 (12.1–12.4, 573) | 12.8 (12.7–12.9, 615) |
| ≥15 | 12.8 (12.6–13.0, 519) | 12.7 (12.5–12.9, 685) | 12.9 (12.7–13.1, 654) | 13.3 (13.1–13.4, 762) | 12.8 (12.6–12.9, 841) | 13.1 (12.9–13.3, 811) |
| Overall | 12.2 (12.1–12.4, 993) | 12.2 (12.1–12.3, 1406) | 12.3 (12.2–12.4, 1365) | 12.8 (12.7–12.9, 1588) | 12.2 (12.1–12.3, 1736) | 12.7 (12.6–12.8, 1742) |
| Anemia (HB<8 g/dL) | ||||||
| <5 | 4.5 (1.6–7.5, 176) | 5.0 (2.3–7.7, 259) | 5.5 (2.8–8.1, 274) | 4.5 (2.2–6.9, 328) | 9.3 (5.8–12.9, 322) | 2.8 (1.0–4.7, 316) |
| 5–14 | 2.3 (0.6–4.1, 298) | 1.5 (0.3–2.8, 462) | 2.1 (0.8–3.4, 437) | 1.2 (0.1–2.3, 498) | 1.7 (0.6–2.9, 573) | 1.1 (0.1–2.2, 615) |
| ≥15 | 3.9 (2.1–5.6, 519) | 4.2 (2.7–5.7, 685) | 3.7 (2.2–5.1, 654) | 2.2 (1.1–3.3, 762) | 3.1 (1.8–4.3, 841) | 3.7 (2.4–5.0, 811) |
| Overall | 3.5 (2.4–4.7, 993) | 3.5 (2.5–4.5, 1406) | 3.5 (2.5–4.5, 1365) | 2.4 (1.6–3.2, 1588) | 3.8 (2.8–4.8, 1736) | 2.6 (1.8–3.4, 1742) |