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Table 1 Description of the 5624 study participants who provided at least one stool sample in 25 rain-fed and 25 irrigated villages of Samar Province, the Philippines, 2003–2004.

From: A cross-sectional study of the prevalence of intensity of infection with Schistosoma japonicumin 50 irrigated and rain-fed villages in Samar Province, the Philippines

Variable Rain-fed villages (%) Irrigated villages (%)
Sample size   3,277 2,347
Sex Males 1,740 (46.9) 1,226 (47.8)
  Females 1,537 (53.1) 1,121 (52.2)
Age distribution ≤ 10 years 638 (19.5) 398 (17.0)
  >10–16 years 973 (29.7) 699 (29.8)
  >16–40 years 944 (28.8) 721 (30.7)
  >40 years 722 (22.0) 529 (22.5)
Occupation* Works most of the time on a rice farm 1402 (48.9) 1069 (49.7)
  Works sometimes on a rice farm 48 (4.3) 28 (5.2)
  Works on a farm but never on a rice farm 121 (4.6) 85 (4.4)
  Does not work on a farm 482 (18.3) 329 (16.9)
  Does not work on a rice farm, may work on another type of farm 586 (22.2) 438 (22.5)
Number of stool samples provided 1 stool 885 (27.0) 697 (29.7)
  2 stools 1123 (34.3) 770 (32.8)
  3 stools 1269 (38.7) 880 (37.5)
  1. Occupation*: No child less than 10 years old (n = 1036) worked and are therefore excluded from this classification, but it includes children aged more than 10 years old still attending school.