Table 1.
Selected characteristics among Congolese refugees with splenomegaly and matched controls following resettlement to the United States
| Characteristic | Cases (n = 130) | Controls (n = 102) | Total (n = 232) |
|---|---|---|---|
| N (%) | N (%) | N (%) | |
| Age on date of arrival (years) | |||
| 0 to < 5 | 3 (2.3) | 2 (2.0) | 5 (2.2) |
| 5 to < 15 | 53 (40.8) | 42 (41.2) | 95 (40.9) |
| 15 to < 25 | 40 (30.8) | 34 (33.3) | 74 (31.9) |
| 25 to < 40 | 15 (11.5) | 11 (10.8) | 26 (11.2) |
| 40 to < 60 | 16 (12.3) | 11 (10.8) | 27 (11.6) |
| 60 and older | 3 (2.3) | 2 (2.0) | 5 (2.2) |
| Gender | |||
| Female | 53 (40.8) | 41 (40.2) | 94 (40.5) |
| Male | 77 (59.2) | 61 (59.8) | 138 (59.4) |
| Follow-up time (months) | (Mean: 12.7; SD: 9.2; range: 0.2–29.6) | (Mean: 9.7; SD: 10.4; range: 0–37.0] | (Mean: 11.4; SD: 9.8; range: 0–37.0) |
| ≥ 6 | 85 (65.4) | 45 (44.2) | 130 (56.3) |
| ≥ 18 | 43 (33.1) | 22 (21.6) | 65 (28.0) |
| In familial cluster* | 87 (66.9) | 37 (36.3) | 143 (61.6) |
| Period of arrival | |||
| December 1, 2014–March 31, 2015 | 0 | 3 (2.9) | 3 (1.3) |
| April 1, 2015–October 15, 2015 | 38 (29.2) | 22 (21.5) | 60 (25.9) |
| October 16, 2015–April 30, 2016 | 67 (51.5) | 34 (33.3) | 101 (43.5) |
| May 1, 2016–October 31, 2016 | 13 (10.0) | 33 (32.4) | 46 (19.8) |
| November 1, 2016–June 6, 2017 | 12 (9.2) | 10 (9.8) | 22 (9.5) |
*
A familial cluster is defined as two or more refugees within either the case or control cohort who were in the same family.