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Table 3 Comparison of individual-level characteristics, between trial arms

From: The Lake Victoria island intervention study on worms and allergy-related diseases (LaVIISWA): study protocol for a randomised controlled trial

Characteristics1 Standard anthelminthic treatment (n = 1,159) Intensive anthelminthic treatment (n = 1,157)
Socio-demographic characteristics   
Age in years, median (IQR) 24 (8 to 33) 24 (7 to 32)
Sex, % male 56% 53%
Occupation type (adults only)   
No personal income 11% 10%
Unskilled, no income 16% 22%
Some skill or capital required, low income 59% 46%
Education, skills or capital required, low to moderate income 5% 9%
Facility owner (such as a shop, boat, or restaurant) 8% 11%
Maternal tribe   
Central 29% 36%
Western 16% 12%
Eastern 19% 23%
Northern 17% 14%
Non-Ugandan 18% 14%
Paternal tribe   
Central 33% 40%
Western 15% 12%
Eastern 20% 21%
Northern 18% 14%
Non-Ugandan 13% 12%
Number of older siblings, mean (SD) 2.8 (2.8) 2.9 (3.1)
Number of younger siblings, mean (SD) 2.6 (2.7) 2.6 (2.7)
Any previous worm treatment in last 12 months 44% 39%
Treatment with albendazole in last 12 months 29% 27%
Treatment with praziquantel in last 12 months 20% 14%
Infections   
Schistosoma mansoni (Kato-Katz) 56% 49%
Schistosoma mansoni (urine CCA) 72% 73%
Schistosoma mansoni intensity (Kato-Katz)   
Uninfected 44% 51%
Low 22% 21%
Moderate 15% 13%
Heavy 18% 14%
Hookworm (Necator americanus; PCR) 23% 23%
Strongyloides stercoralis (PCR) 13% 13%
Trichuris trichiura (Kato-Katz) 12% 11%
Ascaris lumbricoides (Kato-Katz) 2% 1%
Mansonella perstans 3% 2%
Plasmodium falciparum 6% 7%
HIV (adults only) 17% 19%
  1. 1Missing values in standard and intensive arms respectively: age: 4, 1; sex: 6, 7; occupation: 8, 7; maternal tribe: 18, 17; paternal tribe: 15, 17; older siblings: 6, 7; younger siblings: 7, 9; any worm treatment: 17, 15; albendazole treatment: 28, 32; praziquantel treatment: 30, 31; Kato-Katz results: 172, 148; PCR results: 172, 150; urine results: 642, 757; M. perstans: 115, 102; P. falciparum: 107, 94; HIV: 65, 60. CCA, circulating cathodic antigen; IQR, interquartile range; PCR, polymerase chain reaction.