Table 2. Characteristics of individuals screened for malaria in case and control neighborhoods by RDT and LAMP.
| Number (%) | |||||
|---|---|---|---|---|---|
| Index-case households (N = 116) |
Neighbors of case households2 (N = 225) | Control households (N = 286) | p-value3 | ||
| Number individuals1 | 801 | 1,055 | 1,295 | - | |
| RDT positive | 11 (1.4) | 7 (0.7) | 5 (0.4) | 0.03 | |
| LAMP positive | 27 (3.4) | 15 (1.4) | 5 (0.4) | <0.0001 | |
| Sub-patent4 | 21 (2.6) | 14 (1.3) | 5 (0.4) | <0.0001 | |
| Gender | Female | 376 (46.9) | 634 (60.1) | 730 (56.4) | <0.0001 |
| Male | 425 (53.1) | 421 (39.9) | 565 (43.6) | ||
| Age category (years) | <5 | 108 (13.5) | 181 (17.2) | 214 (16.5) | <0.0001 |
| 5–14 | 187 (23.3) | 324 (30.7) | 405 (31.3) | ||
| 15–24 | 289 (36.1) | 226 (21.4) | 209 (16.1) | ||
| 25–34 | 83 (10.4) | 99 (9.4) | 121 (9.3) | ||
| 35–44 | 54 (6.7) | 66 (6.3) | 101 (7.8) | ||
| 45+ | 76 (9.5) | 152 (14.4) | 211 (16.3) | ||
| Missing | 4 (0.5) | 7 (0.7) | 34 (2.6) | ||
| Reported fever | 30 (3.7) | 62 (5.9) | 100 (7.7) | 0.003 | |
| Missing | 0 (0.0) | 2 (0.2) | 4 (0.3) | ||
| Season | Low | 127 (15.9) | 255 (24.2) | 645 (49.8) | <0.0001 |
| High | 674 (84.1) | 800 (75.8) | 650 (50.2) | ||
| Travelled to Angola | 33 (4.1) | 24 (2.3) | 14 (1.1) | <0.0001 | |
| Used a bednet | 153 (19.1) | 294 (27.9) | 298 (23.0) | <0.0001 | |
| Missing | 9 (1.1) | 7 (0.7) | 12 (0.9) | ||
| House sprayed | 202 (25.2) | 304 (28.8) | 426 (32.9) | 0.01 | |
| Missing | 57 (7.1) | 15 (1.4) | 9 (0.7) | ||
RDT: rapid diagnostic test; LAMP: loop mediated isothermal amplification
1Excluding index cases
2 Engela only
3 Pearson's Chi-squared test
4 RDT negative and LAMP positive