Skip to main content

Table 1 Characteristics of children who were infected with any STH at recruitment and presented at the 15-month follow-up point (n =1 141), by treatment group

From: Impact of single annual treatment and four-monthly treatment for hookworm and Ascaris lumbricoides, and factors associated with residual infection among Kenyan school children

  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)
  1. aData are proportions (N/n), unless otherwise stated
  2. bProvided for children aged 5–10