Table 1. Population and demographic information of community subjects enrolled in reexamination studies in selected sentinel sites.
| District (IU) | PHI/PHFO | Area code | Population Size | Number of HHc | Number of HH surveyed (%) | Number of people Enrolled | Age (mean) | Male (%) | Bed net use (%) | Filarial Lymphedema (%) |
|---|---|---|---|---|---|---|---|---|---|---|
| Colombo | Borella a | C4 | 137,423 | 27,484 | 127 (0.5) | 508 | 35.3 | 41.4 | 24.0 | 0.4 |
| Gampaha | PeliyagodaW b | G3 | 10,560 | 2112 | 133 (6.3) | 514 | 35.9 | 44.2 | 49.5 | 2.1 |
| Kalutara | Kalutara North | KA2 | 11,728 | 2032 | 172 (8.5) | 528 | 39.3 | 42.6 | 70.0 | 1.3 |
| Galle | Ambalangoda | GL1 | 13,373 | 2792 | 152 (5.4) | 523 | 39.9 | 40.1 | 64.4 | 1.3 |
| Unawatuna | GL2 | 16,636 | 3660 | 149 (4.1) | 524 | 38.8 | 42.5 | 63.9 | 0.9 | |
| Matara | Weligama | M2 | 10,521 | 2104 | 169 (8.0) | 526 | 37.0 | 40.3 | 67.8 | 0.6 |
| 200,241 | 40,184 | 902 (2.2) | 3,123 | 38 | 42 | 63 | 1.1 |
a Sentinel site C4 is part of the Colombo Municipal Council area.
b Sentinel site G3 is a public health field officer (PHFO) area in a semiurban zone adjacent to Colombo in Gampaha.
c Approximate number of households (HH).