Table 2 Characteristics of the snack and non-snack school after the 2013 and 2014 mass treatment
Characteristic | Non-snack schools | Snack schools | ||||||
|---|---|---|---|---|---|---|---|---|
| Â | 2013 | 2014 | Test Statistica | p-Value | 2013 | 2014 | Test Statistica | p-Value |
|  | n = (689) (%) | n = (646) (%) |  |  | n = (595) (%) | n = (496) (%) |  |  |
Knowledge of schistosomiasis prevention (%) | ||||||||
 Yes | 595 (86.4) | 362 (56.0) | χ2 = 23.732 | <0.001 | 500 (84.0) | 308 (62.1) | χ2 = 10.574 | 0.001 |
 No | 94 (13.6) | 284 (44.0) | ------ | ------ | 95 (16.0) | 188 (37.9) | ------ | ------ |
Eaten food prior to mass treatment (%) | ||||||||
 Yes | 270 (49.8) | 148 (32.5) | χ2 = 4.708 | 0.030 | 519 (92.8) | 211 (54.4) | χ2 = 30.103 | <0.001 |
 No | 272 (50.2) | 307 (67.5) | ------ | ------ | 40 (7.2) | 177 (45.6) | ------ | ------ |
Self-reported uptake of praziquantel (%) | ||||||||
 Yes | 542 (78.7) | 455 (70.4) | χ2 = 1.829 | 0.176 | 559 (93.9) | 387 (78.0) | χ2 = 9.231 | 0.002 |
 No | 147 (21.3) | 191 (29.6) | ------ | ------ | 36 (6.1) | 109 (22.0) | ------ | ------ |
Side-effects attributable to praziquantel (%) | ||||||||
 Yes | 254 (46.9) | 242 (53.2) | χ2 = 0.589 | 0.443 | 192 (34.3) | 240 (61.2) | χ2 = 10.486 | 0.001 |
 No | 288 (53.1) | 213 (46.8) | ------ | ------ | 367 (65.7) | 152 (38.8) | ------ | ------ |
Reported side-effects attributable to praziquantel (%) | ||||||||
 Abdominal pain | 133 (52.4) | 180 (74.4) | χ2 = 6.195 | 0.013 | 109 (56.8) | 157 (65.4) | χ2 = 3.202 | 0.074 |
 Dizziness | 61 (24.0) | 27 (11.2) | ------ | ------ | 45 (23.4) | 40 (16.7) | ------ | ------ |
 Vomiting | 19 (7.5) | 11 (4.6) | ------ | ------ | 7 (3.6) | 25 (10.4) | ------ | ------ |
 Diarrhoea | 31 (12.2) | 7 (2.9) | ------ | ------ | 27 (14.1) | 12 (5.0) | ------ | ------ |
 Headache) | 10 (3.9) | 17 (7.0) | ------ | ------ | 4 (2.1) | 6 (2.5) | ------ | ------ |
S. mansoni infection status (%) | ||||||||
 Positive | 97 (14.1) | 142 (22.0) | χ2 = 2.165 | 0.141 | 8 (1.3) | 37 (7.5) | χ2 = 3.819 | 0.051 |
 Negative | 592 (85.9) | 504 (78.0) | ------ | ------ | 587 (98.7) | 459 (92.5) | ------ | ------ |
Intensity of S. mansoni infection (epg) | ||||||||
 GMI epg | 78.4 | 322.5 | t =2.412 | 0.120 | 38.3 | 145.7 | t =1.662 | 0.197 |