Table 3.
Epidemiological characteristics of cases in case–control studies
| Number of patients (100%) | Relapse or recrudescence | Control group | ||
|---|---|---|---|---|
| P. vivax | P. ovale | P. vivax | P. ovale | |
| n = 26 (%) | n = 49 (%) | n = 93 (%) | n = 196 (%) | |
| Province | ||||
| Anhui | 2 (7.69) | 3 (6.1) | 8 (8.6) | 12 (6.1) |
| Zhejiang | 6 (23.1) | 12 (24.5) | 22 (23.7) | 32 (16.3) |
| Hubei | 2 (7.69) | 2 (4.1) | 8 (8.6) | 8 (4.1) |
| Henan | 7 (26.9) | 9 (18.4) | 28 (30.1) | 35 (17.9) |
| Guangxi | 9 (34.6) | 23 (46.9) | 27 (29.0) | 109 (55.6) |
| Ages | ||||
| 21–30 | 4 (15.4) | 4 (8.2) | 23 (24.7) | 24 (12.2) |
| 31–40 | 8 (30.8) | 15 (30.6) | 26 (28.0) | 66 (33.7) |
| 41–50 | 10 (38.5) | 14 (28.6) | 33 (35.5) | 70 (35.7) |
| 51–60 | 4 (15.4) | 16 (32.7) | 11 (11.8) | 36 (18.4) |
| Gender | ||||
| Male | 25 (96.2) | 47 (96.0) | 90 (96.8) | 190 (97.0) |
| Female | 1 (3.8) | 2 (4.0) | 3 (3.2) | 6 (3.0) |
| Infection area | ||||
| Asia | 9 (34.6) | 32 (34.4) | ||
| Oceania | 1 (3.8) | 3 (3.2) | ||
| East Africa | 9 (34.6) | 3 (6.1) | 36 (38.7) | 12 (6.1) |
| West Africa | 3 (11.5) | 19 (38.8) | 8 (8.6) | 76 (38.8) |
| Central Africa | 4 (15.4) | 24 (49.0) | 14 (15.1) | 96 (49.0) |
| Southern Africa | 3 (6.1) | 12 (6.1) | ||