Table 1. Covariate distribution across symptomatic malaria events in 29 months of follow-up.
| Total person-months†
(N, %) |
Person-months ending in symptomatic infections‡
(N, %) |
Median time to symptoms for entire study (days, IQR) |
p-Value comparing time to symptoms | |
|---|---|---|---|---|
| Main exposure | <0.001§ | |||
| No infection | 3537 (65.8) | 1580 (65.7) | 230 (98, 402) | – |
| Asymptomatic infection | 1842 (34.2) | 826 (34.3) | 173 (49, 399) | – |
| Age | 0.015 ¶ | |||
| <5 years | 812 (15.1) | 329 (13.7) | 226 (82, 435) | – |
| 5 to 15 years | 2279 (42.4) | 1319 (54.8) | 199 (70, 379) | – |
| >15 years | 2288 (42.5) | 758 (31.5) | 244 (97, 426) | – |
| Sex | 0.779§ | |||
| Male | 2360 (43.9) | 1190 (49.5) | 229 (86, 420) | – |
| Female | 3019 (56.1) | 1216 (50.5) | 202 (76, 384) | – |
| Regular bed net usage* | 1.000§ | |||
| No | 1425 (26.5) | 730 (30.3) | 210 (82, 386) | – |
| Yes | 3954 (73.5) | 1676 (69.7) | 217 (80, 403) | – |
| Village | <0.001¶ | |||
| Kinesamo | 1854 (34.5) | 876 (36.4) | 233 (89, 418) | – |
| Maruti | 1681 (31.3) | 745 (31.0) | 174 (64, 350) | – |
| Sitabicha | 1844 (34.3) | 785 (32.6) | 231 (90, 421) | – |
Abbreviations: IQR, interquartile range.
*Regular bed net usage was a person averaging > 5 nights a week sleeping under a bed net.
†Total person-months indicates the total number of monthly follow-up visits ending in a symptomatic infection or censoring for full 29 months of follow-up.
‡Symptomatic infections were defined using the primary case definition where a participant was P. falciparum-positive by both RDT and qPCR as well as had at least one symptom consistent with malaria during a sick visit.
§Wilcoxon rank sum test with continuity correction and Bonferroni correction for repeated measures.
¶ Kruskal-Wallis test with Bonferroni correction for repeated measures.
Significant estimates are bolded.