Table 2.
Selected age-adjusted baseline characteristics among adults aged > = 20 years, by level of screen time, National Health and Nutrition Examination Survey 1999-2002
| Screen time (hours per day) | |||||||
|---|---|---|---|---|---|---|---|
| < 1 | 1 | 2 | 3 | 4 | > = 5 | ||
| Characteristics | Mean or% (95% CI) | Mean or% (95% CI) | Mean or% (95% CI) | Mean or% (95% CI) | Mean or% (95% CI) | Mean or% (95% CI) | P for trend |
| Age (years) | 43.6 (42.6, 44.6) | 43.0 (41.7, 44.3) | 45.3 (44.3, 46.2) | 46.8 (45.4, 48.1) | 47.3 (45.8, 48.7) | 46.4 (45.4, 47.3) | < 0.001 |
| Men,% | 46.1 (42.7, 49.5) | 46.4 (43.2, 49.6) | 51.1 (48.1, 54.1) | 50.7 (47.2, 54.1) | 53.0 (49.1, 56.8) | 48.6 (45.3, 51.8) | 0.012 |
| Whites,% | 72.9 (67.3, 78.0) | 74.1 (69.8, 78.0) | 75.3 (70.7, 79.4) | 74.7 (69.9, 79.0) | 71.0 (66.1, 75.5) | 67.0 (62.3, 71.4) | 0.013 |
| > High school,% | 58.9 (55.4, 62.4) | 58.4 (53.7, 63.1) | 54.0 (50.1, 57.9) | 52.1 (47.6, 56.5) | 47.7 (42.4, 53.2) | 43.2 (39.7, 46.7) | < 0.001 |
| Current smoker,% | 19.6 (15.6, 24.2) | 16.5 (13.4, 20.2) | 22.1 (19.0, 25.6) | 29.2 (25.6, 33.1) | 29.1 (26.4, 31.8) | 35.0 (31.6, 38.5) | < 0.001 |
| Leisure-time physical activity (min/month) | 443.2 (319.6, 566.8) | 336.3 (276.6, 396.0) | 337.8 (296.4, 379.1) | 323.2 (272.0, 374.4) | 257.0 (207.2, 306.9) | 198.8 (165.1, 232.5) | 0.043 |
| Alcohol intake (g) | 10.2 (7.9, 12.4) | 12.0 (9.5, 14.5) | 12.0 (9.4, 14.6) | 10.4 (8.7, 12.0) | 13.0 (9.3, 16.7) | 12.8 (8.4, 17.3) | 0.881 |
| Healthy Eating Index score | 65.4 (64.2, 66.6) | 65.2 (64.1, 66.4) | 64.1 (62.9, 65.3) | 62.6 (61.6, 63.5) | 63.4 (61.9, 64.8) | 60.9 (59.9, 61.9) | < 0.001 |
| Body mass index (kg/m2) | 26.5 (26.0, 27.0) | 27.2 (26.6, 27.9) | 27.8 (27.4, 28.2) | 28.0 (27.4, 28.7) | 29.4 (28.8, 30.1) | 28.9 (28.3, 29.5) | < 0.001 |
| Systolic blood pressure (mm Hg) | 121.8 (120.5, 123.1) | 122.5 (121.3, 123.8) | 122.9 (121.8, 124.0) | 123.7 (122.5, 124.9) | 124.9 (123.0, 126.8) | 124.4 (122.9, 125.8) | 0.007 |
| High-density lipoprotein cholesterol (mg/dl) | 53.0 (52.0, 53.9) | 52.3 (50.7, 53.8) | 50.9 (49.7, 52.0) | 50.4 (49.3, 51.6) | 50.0 (48.1, 51.9) | 48.9 (47.4, 50.4) | 0.001 |
| Non-high-density lipoprotein cholesterol (mg/dl) | 147.3 (143.6, 150.9) | 149.7 (146.1, 153.3) | 153.7 (150.8, 156.6) | 153.8 (150.7, 156.9) | 153.0 (149.0, 156.9) | 155.0 (151.8, 158.2) | 0.001 |
| HbA1c (%) | 5.4 (5.3, 5.4) | 5.4 (5.4, 5.5) | 5.4 (5.4, 5.5) | 5.5 (5.4, 5.5) | 5.5 (5.4, 5.6) | 5.6 (5.5, 5.7) | 0.039 |
| Excellent or very good health,% | 62.7 (59.5, 65.9) | 60.7 (54.9, 66.2) | 57.1 (54.1, 60.0) | 53.5 (50.2, 56.8) | 44.2 (39.5, 49.0) | 42.8 (38.6, 47.2) | < 0.001 |
| Health insurance coverage,% | 83.7 (80.4, 86.5) | 84.0 (80.6, 86.9) | 84.9 (82.5, 87.1) | 82.0 (79.7, 84.1) | 81.5 (77.5, 84.8) | 75.7 (71.7, 79.3) | 0.001 |
| Diagnosed diabetes,% | 5.1 (3.6, 7.2) | 4.8 (3.3, 6.8) | 5.7 (4.7, 6.7) | 7.1 (5.4, 9.2) | 7.2 (5.8, 8.8) | 9.4 (7.4, 11.9) | 0.001 |
| History of cardiovascular disease,% | 6.5 (4.8, 8.7) | 7.4 (5.9, 9.3) | 7.7 (6.3, 9.3) | 7.9 (6.8, 9.2) | 7.4 (6.1, 8.8) | 14.8 (12.7, 17.3) | < 0.001 |
| History of cancer,% | 7.1 (5.1, 9.6) | 7.1 (5.1, 9.8) | 7.5 (6.3, 8.9) | 8.6 (7.1, 10.5) | 7.4 (5.7, 9.6) | 9.6 (7.5, 12.3) | 0.159 |