Table 1.
VFR | Non-VFR | P value* | |
---|---|---|---|
Number | 3,707 | 17,507 | |
Age (years) | |||
< 1 | 107 (2.9%) | 7 (< 0.1%) | 0.001 |
1–5 | 556 (15.0%) | 83 (0.5%) | 0.001 |
6–17 | 550 (14.8%) | 784 (4.5%) | 0.001 |
18–49 | 1,820 (49.1%) | 11,080 (63.3%) | 0.001 |
50–64 | 498 (13.4%) | 3,822 (21.8%) | 0.001 |
> 65 | 176 (4.8%) | 1,731 (9.9%) | 0.001 |
Sex (female) | 2,002 (54.0%) | 9,519 (54.3%) | 0.86 |
Travel duration | |||
1–7 days | 108 (2.9%) | 2,320 (13.3%) | < 0.0001 |
8–14 days | 747 (20.1%) | 7,150 (40.8%) | < 0.0001 |
15–28 days | 1,165 (31.4%) | 5,011 (28.6%) | < 0.0001 |
29–180 days | 1,545 (41.7%) | 2,488 (14.2%) | < 0.0001 |
> 6 months | 136 (3.7%) | 526 (3.0%) | < 0.0001 |
Type of destination | |||
Urban only | 1,542 (41.6%) | 5,116 (29.2%) | < 0.0001 |
Rural only | 136 (3.7%) | 1,847 (10.6%) | < 0.0001 |
Both | 2,015 (54.4%) | 10,530 (60.2%) | < 0.0001 |
Neither | 14 (0.4%) | 14 (0.1%) | < 0.0001 |
Days to departure (median, IQR) | 17 (8–33) | 26 (12–46) | 0.0001 |
Top five destination countries | |||
India (18.1%) | India (17.9%) | ||
Ghana (8.3%) | China (10.5%) | ||
Ethiopia (6.0%) | Thailand (9.3%) | ||
Nigeria (5.9%) | Kenya (8.4%) | ||
Vietnam (5.6%) | Tanzania (8.3%) |
Based on Kruskal–Wallis equality-of-proportions test or Somers' D test as appropriate, adjusted for clustering among clinical sites.