Table 3. Characteristics of the survey population during the 2nd post-IRS survey (August 2009).
Values are presented with 95% CI and sample size in parentheses. P-values represent univariate comparisons between IRS and non-IRS districts. Comparisons that were statistically significant at p<0.05 are indicated in bold. All comparisons controlled for clustering within enumeration areas.
| Non-IRS District | IRS District | P value | |
|---|---|---|---|
| N | 1738 | 1742 | |
| Median age in years (IQR) | 14.2 (6.5–29.6) | 14.0 (6.7–28.1) | 0.508 |
| Female | 56.2 (54.0–58.5, 1738) | 55.6 (53.2–58.0, 1742) | 0.702 |
| Caretaker with some secondary education (for children <5 years) | 25.2 (17.0–33.4, 322) | 31.0 (23.3–38.7, 316) | 0.241 |
| Living with biological mother (children <5 only) | 94.4 (91.5–97.4, 322) | 91.8 (88.1–95.4, 316) | 0.676 |
| Median elevation (m) (IQR) | 1173 (1149–1302) | 1378 (1192–1465) | <0.001 |
| Elevation >1500 m | 9.7 (6.1–13.4, 1738) | 15.4 (10.6–20.3, 1742) | 0.681 |
| House type1 | |||
| Traditional mud hut | 13.0 (9.6–16.5, 226) | 11.1 (7.6–14.5, 193) | |
| Semi-permanent (corrugated iron roof) | 71.0 (66.1–75.9, 1231) | 70.8 (66.0–75.7, 1233) | |
| Permanent (concrete or stone walls) | 16.0 (11.9–20.0, 277) | 18.1 (14.0–22.2, 315) | 0.616 |
| Eaves closed | 8.3 (5.4–11.2, 1738) | 13.0 (9.4–16.6, 1742) | 0.172 |
| Mosquito prevention methods | |||
| House sprayed (%) | 1.4 (0.1–2.7, 1735) | 60.5 (54.6–66.3, 1725) | <0.001 |
| Mosquito coils, insecticide spray, repellents used in prior week | 13.1 (9.5–16.6, 1738) | 6.3 (3.8–8.7, 1742) | 0.022 |
| At least one bednet in house (%) | 59.2 (54.8–63.7, 1738) | 57.7 (53.3–62.2, 1742) | 0.365 |
| Slept under any net the prior night | |||
| <5 | 68.1 (61.7–74.5, 320) | 58.9 (52.1–65.7, 314) | 0.067 |
| 5–14 | 48.9 (42.7–55.0, 575) | 42.6 (36.4–48.8, 610) | 0.116 |
| ≥15 | 61.0 (56.6–65.4, 834) | 62.8 (58.5–67.2, 802) | 0.859 |
| Overall | 58.3 (54.0–62.5, 1729) | 55.0 (50.7–59.3, 1726) | 0.158 |
| Slept under an ITN the prior night | |||
| <5 | 43.4 (36.7–50.2, 320) | 39.8 (33.1–46.5, 314) | 0.442 |
| 5–14 | 31.8 (25.8–37.9, 575) | 31.0 (25.3–36.7, 610) | 0.820 |
| ≥15 | 37.1 (32.6–41.5, 834) | 43.9 (39.2–48.6, 802) | 0.106 |
| Overall | 36.5 (32.2–40.8, 1729) | 38.6 (34.3–42.9, 1726) | 0.750 |
| Fever in prior 24 hours | |||
| <5 | 33.5 (27.6–39.5, 319) | 30.9 (24.8–36.9, 314) | 0.506 |
| 5–14 | 16.4 (12.8–20.1, 572) | 15.7 (12.1–19.2, 606) | 0.784 |
| ≥15 | 24.1 (20.9–27.4, 833) | 29.5 (25.9–33.2, 799) | 0.092 |
| Overall | 23.3 (20.7–25.9, 1724) | 24.9 (22.1–27.7, 1719) | 0.620 |
| Took antimalarial prior 2 weeks | |||
| <5 | 14.9 (10.6–19.2, 322) | 9.8 (6.2–13.4, 316) | 0.042 |
| 5–14 | 10.6 (7.5–13.8, 575) | 8.9 (6.5–11.4, 615) | 0.310 |
| ≥15 | 12.1 (9.7–14.5, 841) | 10.2 (8.0–12.5, 811) | 0.303 |
| Overall | 12.1 (10.1–14.2, 1738) | 9.7 (8.0–11.4, 1742) | 0.061 |
| Took ACT prior 2 weeks | |||
| <5 | 4.3 (2.0–6.7, 322) | 4.7 (2.1–7.4, 316) | 0.796 |
| 5–14 | 1.9 (0.7–3.1, 575) | 4.1 (2.5–5.6, 615) | 0.046 |
| ≥15 | 3.0 (1.9–4.1, 841) | 2.8 (1.7–4.0, 811) | 0.833 |
| Overall | 2.9 (2.0–3.7, 1738) | 3.6 (2.6–4.6, 1742) | 0.290 |