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Table 1 Characteristics of JHS participants (n = 3410) by category of television viewing

From: Sedentary behavior and subclinical atherosclerosis in African Americans: cross-sectional analysis of the Jackson heart study

  Television viewing  
Variable <2 h/day 2–4 h/day >4 h/day P-Trend
  (n = 1111) (n = 1247) (n = 1052)  
Age (years) 52.8 ± 12.7 53.2 ± 12.4 54.7 ± 13.1 <0.001
Male sex (%) 36.5 37.4 37.8 0.534
Education < HS (%) 15.4 16.5 20.3 0.003
Income < $50,000 (%) 68.0 67.0 72.6 0.023
Fulltime Employment (%) 56.8 57.6 50.9 0.006
Heavy alcohol drinking (%)a 4.0 4.1 3.2 0.330
Current Smoking (%) 13.6 11.4 13.8 0.945
Energy Intake (kcal/d) 2235.5 ± 1360.6 2228.1 ± 1229.8 2209.5 ± 1227.9 0.890
History of MI (%) 4.9 4.6 4.9 0.934
Statin Use (%) 10.5 10.6 12.1 0.245
Diabetes (%)b 18.3 19.2 21.4 0.069
Hypertension (%)c 55.4 60.8 59.3 0.058
BMI (kg/m2) 31.5 ± 7.0 32.1 ± 7.4 31.8 ± 7.6 0.133
Obese (%) 51.6 56.5 52.6 0.579
Total Cholesterol (mg/dL) 197.6 ± 39.5 199.0 ± 41.5 201.0 ± 40.3 0.178
HDL Cholesterol (mg/dL) 51.9 ± 14.6 51.4 ± 14.4 51.5 ± 14.5 0.638
LDL Cholesterol (mg/dL) 125.9 ± 37.4 126.3 ± 36.9 129.0 ± 36.6 0.139
eGFR <60 ml/min/1.73 m2 (%) 5.6 5.0 6.2 0.559
Leisure-time MVPA (min/week) 72.6 ± 117.0 70.4 ± 112.6 67.2 ± 111.3 0.547
Level of MVPA (%)d     0.265
 Poor 45.9 45.8 49.2  
 Intermediate 33.1 33.5 30.2  
 Ideal 21.0 20.7 20.5  
  1. Data presented as mean ± standard deviation or percentage
  2. HDL high density lipoprotein, HS high school, MI myocardial infarction, MVPA moderate to vigorous physical activity
  3. aDefined as >14 drinks/week for men; >7 drinks/week for women
  4. bDefined as fasting glucose ≥126 mg/dL, HbA1c ≥6.5 %, or use of diabetic medication
  5. cDefined as blood pressure ≥140/90 mmHg and/or use of antihypertensive medication
  6. dDefined according to American Heart Association Life’s Simple 7 criteria for minutes/week of moderate or vigorous physical activity. Poor physical activity: 0 min/week of leisure-time moderate or vigorous physical activity. Intermediate physical activity: >0 and <150 min/week of leisure-time moderate physical activity; and >0 and <75 min/week of leisure-time vigorous physical activity. Ideal physical activity: ≥150 min/week of leisure-time moderate physical activity; or ≥75 min/week of leisure-time vigorous physical activity