Table 1.
Characteristics of the Study Population
| Characteristic | Pre-IRSa |
After First Rounda of IRS | After Second Rounda of IRS | After Third Rounda of IRS |
|---|---|---|---|---|
| Data at the participant level | ||||
| No. of participants, by age group | ||||
| 0.5 to <5 y | 192 | 80 | 79 | 82 |
| 5–10 y | 148 | 179 | 168 | 161 |
| ≥18 y | 106 | 80 | 77 | 74 |
| Total follow-up time, person-years, by age group | ||||
| 0.5 to <5 y | 345.7 | 29.4 | 29.5 | 37.5 |
| 5–10 y | 539.2 | 69.2 | 66.7 | 75.4 |
| ≥18 y | 310.3 | 32.6 | 31.6 | 36.6 |
| Data at the visit level, No. (%) | ||||
| Type of visit | ||||
| Enrollment | 445 (3.5) | 5 (0.3) | 14 (0.9) | 5 (0.3) |
| Unscheduled | 7790 (60.1) | 460 (26.5) | 496 (30.1) | 316 (19.6) |
| Routine | 4725 (36.5) | 1270 (73.2) | 1139 (69.1) | 1291 (80.1) |
| Febrile during study visit | 3094 (40.7) | 155 (11.2) | 67 (5.6) | 30 (2.3) |
Abbreviation: IRS, indoor residual spraying.
aPre-IRS: August 2011–January 2015; first round of IRS: February–June 2015; second round of IRS: July–November 2015; third round of IRS: December 2015–May 2016.