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Table 2 Characteristics of the snack and non-snack school after the 2013 and 2014 mass treatment

From: Reduced uptake of mass treatment for schistosomiasis control in absence of food: beyond a randomized trial

Characteristic Non-snack schools Snack schools
  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
  1. aAdjusted for cluster design effect
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