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


Ford BMC Public Health 2012 12:70   doi:10.1186/1471-2458-12-70

Open Data