| Treatment group | |
---|---|---|
Characteristicsa | Annual treatment (N = 562) | Four-monthly treatment (N = 579) |
Characteristics | ||
 Sex, male | 54.8 (308/562) | 53.4 (309/579) |
 Age, years | 10.3 (2.5) | 10.4 (2.5) |
 Thin | 12.5 (70/562) | 11.1 (64/579) |
 Stunted | 27.2 (153/562) | 27.3 (158/579) |
 Underweightb | 6.12 (18/294) | 6.25 (19/298) |
 Hemoglobin, g/dL | 12.3 (1.3) | 12.3 (1.4) |
 Anemia | 36.0 (194/539) | 40.7 (227/558) |
STH infection | ||
 Hookworm | 58.7 (330/562) | 59.9 (347/579) |
  Ascaris lumbricoides | 55.7 (313/562) | 56.7 (328/579) |
  Trichuris trichiura | 1.6 (9/562) | 1.2 (7/579) |
 Any STH infection | 100 (562/562) | 100 (579/579) |
STH infection intensity (epg) | ||
 Hookworm | 106 (66–185) | 180 (98–330) |
  A. lumbricoides | 3 234 (2 539–4 119) | 2 605 (1 968–3 449) |
Household characteristics | ||
 Socioeconomic status | ||
  Poor | 64.3 (342/532) | 64.1 (356/555) |
  Less poor | 35.7 (190/532) | 35.9 (199/555) |
 Water source | ||
  Non-improved drinking water | 6.7 (36/538) | 3.5 (20/558) |
  Improved drinking water | 93.3 (502/538) | 96.4 (538/558) |
 Floor | ||
  Mud | 95.2 (513/539) | 94.1 (526/559) |
  Cemented | 4.8 (26/539) | 5.9 (33/559) |
 Pit latrine | ||
  No | 11.3 (61/539) | 11.6 (65/560) |
  Yes | 88.7 (478/539) | 88.4 (495/560) |
School-level characteristics | ||
 Baseline school prevalence | ||
  Hookworm | ||
    < 33% | 31.3 (176/562) | 36.8 (213/579) |
   34–45% | 35.6 (200/562) | 32.5 (188/579) |
    > 45% | 33.1 (186/562) | 30.7 (178/579) |
   A. lumbricoides | ||
   <27% | 35.4 (199/562) | 38.8 (225/579) |
   28–30% | 26.2 (147/562) | 26.9 (156/579) |
    > 40% | 38.4 (216/562) | 34.2 (198/579) |
 School mean infection intensity | ||
  Hookworm | ||
   6–35 | 31.3 (176/562) | 36.8 (213/579) |
   44–90 | 35.6 (200/562 | 32.5 (188/579) |
   102–453 | 33.1 (186/562) | 30.7 (178/579) |
   A. lumbricoides | ||
   366–913 | 34.3 (193/562) | 41.5 (240/579) |
   914–2497 | 29.7 (167/562) | 29.0 (168/579) |
    > 2497 | 35.9 (202/562) | 29.5 (171/579) |
  Latrine cleanliness | ||
   Clean | 47.8 (269/562) | 53.4 (309/579) |
   Dirty | 26.3 (148/562) | 26.8 (155/579) |
   Very dirty | 25.8 (145/562) | 19.9 (115/579) |
  Children per latrine | ||
    < 50:1 | 42.9 (241/562) | 42.0 (243/579) |
    > 50:1 | 57.1 (321/562) | 58.0 (336/579) |