Variable | Mean (St. Dev) | Number (%) |
---|---|---|
Intensity of infection | ||
 No infection (0 eggs/ml: epm) |  | 1 726 (84.6) |
 Light infection (1 – 100 epm) |  | 145 (7.1) |
 Moderate/heavy infection (>100 epm) |  | 40 (2.1) |
Age | Â | 9.98 (2.2) |
 6–9 years |  | 1 130 (55.9) |
 10–15 years |  | 900 (44.1) |
Sex | ||
 Female |  | 1 027 (50.4) |
 Male |  | 1 000 (49.6) |
Altitude | ||
 Plateau |  | 723 (35.5) |
 Valley |  | 1 316 (64.5) |
NDVI | 138.6 (4.9) | Â |
T max | 19.6 (3.1) | Â |
Snail abundance (B. globosus) | 25.3 (37.1) | Â |