Distribution of demographic factors among study groups
| Factor . | NDs (n = 167) . | ACs (n = 133) . | ATL (n = 90) . | HAM/TSP (n = 49) . |
|---|---|---|---|---|
| Sex, n (%) | ||||
| Male | 31 (18.6) | 22 (16.5) | 41 (45.6) | 13 (26.5) |
| Female | 135 (80.8) | 111 (83.5) | 49 (54.4) | 36 (73.5) |
| Missing | 1 (0.6) | |||
| Race, n (%) | ||||
| African descent | 164 (98.2) | 132 (99.2) | 87 (96.7) | 42 (85.7) |
| Caucasian descent | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (2.0) |
| Other | 0 (0.0) | 1 (3.0) | 0 (0.0) | 2 (4.1) |
| Missing | 3 (1.8) | 3 (3.3) | 4 (8.2) | |
| Age, y* | ||||
| Mean ± SEM | 42.0 ± 1.1 | 43.1 ± 1.2 | 46.3 ± 1.7 | 48.3 ± 1.8 |
| Range | (18.3-78.0) | (18.0-75.9) | (18.7-80.7) | (14.8-75.0) |
| Factor . | NDs (n = 167) . | ACs (n = 133) . | ATL (n = 90) . | HAM/TSP (n = 49) . |
|---|---|---|---|---|
| Sex, n (%) | ||||
| Male | 31 (18.6) | 22 (16.5) | 41 (45.6) | 13 (26.5) |
| Female | 135 (80.8) | 111 (83.5) | 49 (54.4) | 36 (73.5) |
| Missing | 1 (0.6) | |||
| Race, n (%) | ||||
| African descent | 164 (98.2) | 132 (99.2) | 87 (96.7) | 42 (85.7) |
| Caucasian descent | 0 (0.0) | 0 (0.0) | 0 (0.0) | 1 (2.0) |
| Other | 0 (0.0) | 1 (3.0) | 0 (0.0) | 2 (4.1) |
| Missing | 3 (1.8) | 3 (3.3) | 4 (8.2) | |
| Age, y* | ||||
| Mean ± SEM | 42.0 ± 1.1 | 43.1 ± 1.2 | 46.3 ± 1.7 | 48.3 ± 1.8 |
| Range | (18.3-78.0) | (18.0-75.9) | (18.7-80.7) | (14.8-75.0) |
Information on age was missing for 1 ND subject and 1 HAM/TSP subject.