Research Article
An Outbreak of Hepatic Veno-Occlusive Disease in Western Afghanistan Associated with Exposure to Wheat Flour Contaminated with Pyrrolizidine Alkaloids
Table 1
Demographic characteristics of cases and controls.
| | Case | All Controls | Household Controls | Villages controls | District controls |
| | N | 67 | 199 | 19 | 99 | 81 | | Sex (% male) | 39/67 (58.2%) | 117/199 (58.8%) | 7/19 (36.8%) | 62/99 (62.6%) | 48/81 (59.3%) | | Mean Age, years (SD) | 24.6 (16.0) | 24.7 (16.1) | 21.9 (11.6) | 24.8 (16.5) | 25.3 (16.7) | | Age group | | | | | | | 0–10 | 14/67 (20.9) | 40/199 (20.1) | 2/19 (10.5) | 20/99 (20.2) | 18/81 (22.2) | | 11–20 | 20/67 (29.9) | 62/199 (31.2) | 8/19 (42.1) | 34/99 (34.3) | 20/81 (24.7) | | 21–30 | 13/67 (19.0) | 38/199 (19.1) | 6/19 (31.6) | 14/99 (14.1) | 18/81 (22.2) | | 30 | 20/67 (29.9) | 59/199 (29.6) | 3/19 (15.8) | 31/99 (31.3) | 25/81 (30.9) | | Median number people per household (inter-quartile range) | 7 (5–9) | 9 (7–13) | 9 (8–18) | 10 (7–15) | 9 (6–12) |
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