Table 1. Comparative demographic and socio-economic status of women participating in impact surveys at each time point; statistical test results are not shown, since such tests require mixed model analysis.
| Baseline1 | 3 months | 12 months | 30 months | |||||
| Demographic/socioeconomic factor | Total n | Mean ± SD or Frequency (%) | Total n | Mean ± SD or Frequency (%) | Total n | Mean ± SD or Frequency (%) | Total n | Mean ± SD or Frequency (%) |
| Age | 389 | 30.1±7.9 | 580 | 32.0±8.2 | 577 | 33.3±7.8 | 306 | 33.9±7.7 |
| Marital status | 389 | 575 | 526 | 306 | ||||
| Unmarried | 54 (14%) | 76 (13%) | 38 (7%) | 17 (6%) | ||||
| Married | 332 (85%) | 494 (86%) | 483 (92%) | 283 (92%) | ||||
| Widowed/divorced | 3 (1%) | 5 (1%) | 5 (1%) | 6 (2%) | ||||
| Pregnant | 389 | 7 (2%) | 574 | 16 (3%) | 523 | 21 (4%) | 306 | 5 (2%) |
| No. of children | 389 | 1.7±1.1 | 575 | 1.8±1.1 | 524 | 1.9±1.0 | 306 | 2.0±.9 |
| Meat consumption | 375 | 4.1±2.9 | 565 | 3.7±2.2 | 463 | 3.8±2.4 | 302 | 3.2±2.3 |
| Education | 385 | 573 | 508 | 306 | ||||
| none/primary (1–5) | 86 (22%) | 160 (28%) | 128 (25%) | 83 (27%) | ||||
| 6–9 years | 215 (56%) | 297 (52%) | 288 (57%) | 159 (52%) | ||||
| >9 years | 84 (22%) | 116 (20%) | 92 (18%) | 64 (21%) | ||||
| STH infection risk (work) | 385 | 574 | 507* | 306 | ||||
| Office, housewife,other (low) | 55 (14%) | 82 (14%) | 29 (6%) | 33 (11%) | ||||
| Outdoors (high) | 330 (86%) | 492 (86%) | 478 (94%) | 273 (89%) | ||||
| Ethnicity | 388 | 575 | 530 | 305 | ||||
| Kinh | 258 (66%) | 324 (56%) | 352 (66%) | 194 (64%) | ||||
| Other | 130 (33%) | 251 (44%) | 178 (34%) | 111 (36%) | ||||
| Place of residence | 389 | 582 | 577 | 306 | ||||
| Tran Yen | 224 (58%) | 268 (46%) | 291 (50%) | 168 (55%) | ||||
| Yen Binh | 165 (42%) | 314 (54%) | 286 (50%) | 138 (45%) | ||||
1
Represents baseline survey conducted in November 2005 prior to implementation of WIFS and de-worming in May 2006.