Parameter | Incidence rate ratio (IRR) and 95% CI (n = 11 prefectures) | |
---|---|---|
(1977-1983) vs (1973-1976)a | 0.19b | (0.11 to 0.33) |
Annual MDA: (1973-1976)a | 0.98c | (0.97 to 1.00) |
Annual MDA: (1977-1983)a | 1.05b | (1.03 to 1.06) |
Annual chemoprophylaxis | 0.98 | (0.96 to 1.00) |
Bed nets per person | 1.03 | (0.94 to 1.13) |
Rainfall (lagged 1Â month) | 1.02 | (0.98 to 1.06) |
GDP | 0.95 | (0.87 to 1.04) |
n (prefecture-months) | 1452 | Â |