Table 2 Demographic, medical factors and visual impairment across sleep duration categories: National Health Interview Survey 2009
N = 29815 | < 6 h | 6-8 h | > 8 h |
|---|---|---|---|
n = 8,454 | n = 8,734 | N = 2,593 | |
Demographic | |||
Female, n (%) | 4787 (57) | 4737 (54) | 1539 (59) |
Income, < 35,000, n (%)* | 6377 (75) | 6228 (71) | 2261 (87) |
Medical factors | |||
Underweight, n (%)* | 2821(33) | 3381 (39) | 983 (38) |
Normal weight, n (%)* | 2832 (33) | 3132 (36) | 869 (34) |
Obesity, n (%) | 2801 (33) | 2221 (25) | 741 (27) |
Diabetes, n (%)* | 768 (9) | 540 (6) | 332 (13) |
Hypertension, n (%) | 2641 (31) | 2090 (24) | 938 (36) |
Heart Disease, n (%)* | 757 (9) | 617 (7) | 325 (13) |