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Table 1 Baseline characteristics for Jackson Heart Study participants by quartiles of forced-expiratory-volume-in-1-second and forced-vital-capacity

From: The association of reduced lung function with blood pressure variability in African Americans: data from the Jackson Heart Study

  Quartile 1 (lowest) Quartile 2 Quartile 3 Quartile 4 (highest)
  Forced expiratory volume in 1 s
  (n = 251) (n = 253) (n = 253) (n = 251)
FEV1 range in Men, percent predicted <80.7 80.7 to 91.8 91.8 to 101.1 ≥101.1
FEV1 range in Women, percent predicted <83.8 83.8 to 95.4 95.4 to 106.8 ≥106.8
Age, years 59.8 ± 10.4 57.7 ± 10.8 57.9 ± 11.0 61.0 ± 11.1
Male, % 31.9 32.0 32.0 31.9
Height, cm 170.3 ± 9.4 168.6 ± 9.4 167.7 ± 8.6 166.1 ± 8.7
Weight, kg 92.3 ± 19.1 90.2 ± 20.5 85.3 ± 19.3 84.3 ± 19.3
BMI, kg/m2 31.8 ± 6.1 31.8 ± 7.3 30.3 ± 6.2 30.5 ± 5.5
Obese, % 60.4 51.0 45.1 43.8
Physical activity scorea, exercise units 8.2 ± 2.6 8.2 ± 2.3 8.4 ± 2.6 8.5 ± 2.6
Cigarette pack years 9.4 ± 18.3 8.8 ± 17.1 4.5 ± 10.8 6.3 ± 13.8
Smoking status, %     
 Never 63.8 64.4 73.9 68.9
 Former 21.5 17.4 19.4 24.3
 Current 13.2 15.4 5.9 5.2
Diabetes, % 31.1 27.1 19.9 19.3
Total cholesterol, mg/dL 199.6 ± 37.1 201.1 ± 41.2 199.9 ± 37.4 203.6 ± 44.1
High-density lipoprotein, mg/dL 53.4 ± 15.8 54.0 ± 14.5 52.8 ± 14.9 55.2 ± 15.0
Statin use, % 14.7 14.7 13.6 13.1
History of stroke, % 5.2 4.4 1.2 4.4
History of myocardial infarction, % 10.0 7.1 5.9 6.4
eGFR < 60 ml/min/m2, % 12.6 6.4 7.2 8.8
ACR ≥ 30, % 9.2 9.5 5.1 8.8
High sensitivity c-reactive protein, mg/L 3.5 (1.5 – 6.6) 3.0 (1.4 – 5.7) 2.8 (1.1 – 5.6) 2.2 (0.9 – 4.6)
Mean daytime systolic blood pressure, mm Hg 131.0 ± 14.8 129.7 ± 13.4 128.5 ± 12.7 128.4 ± 13.0
Mean daytime diastolic blood pressure, mm Hg 77.0 ± 9.4 78.2 ± 9.4 78.4 ± 9.2 77.6 ± 9.0
Hypertension, % 72.1 64.8 66.0 61.8
Antihypertensive medication useb, % 67.7 58.5 55.7 55.4
Antihypertensive medication classesb, %     
 Diuretic 72.6 65.7 62.4 70.5
 Beta blocker 28.7 24.3 23.3 17.4
 Calcium channel blocker 39.5 37.9 33.1 35.6
 Angiotensin converting enzyme inhibitors 44.0 39.3 33.1 39.4
 Angiotensin receptor blockers 15.3 8.6 14.3 10.6
  Forced vital capacity
  (n = 251) (n = 253) (n = 253) (n = 251)
FVC range in men, percent predicted <81.4 81.4 to 90.4 90.4 to 99.8 ≥99.8
FVC range in Women, percent predicted <83.3 83.3 to 94.2 94.2 to 105.2 ≥105.2
Age, years 59.5 ± 10.2 57.3 ± 10.5 58.4 ± 11.1 61.1 ± 11.5
Male, % 31.9 32.0 32.0 31.9
Height, cm 170.1 ± 9.8 168.2 ± 8.8 167.6 ± 8.5 166.8 ± 9.1
Weight, kg 93.9 ± 19.7 89.4 ± 20.9 85.6 ± 16.9 83.2 ± 17.6
BMI, kg/m2 32.4 ± 6.2 31.6 ± 7.1 30.5 ± 5.9 29.9 ± 5.9
Obese, % 63.2 53.4 45.5 38.3
Physical activity scorea, exercise units 8.1 ± 2.5 8.3 ± 2.4 8.3 ± 2.6 8.6 ± 2.7
Cigarette pack years 7.9 ± 15.6 7.9 ± 16.4 6.0 ± 13.8 7.1 ± 15.5
Smoking status, %     
 Never 67.7 64.0 71.9 67.3
 Former 17.5 20.6 19.8 24.7
 Current 12.4 13.8 7.1 6.4
Diabetes, % 32.8 23.0 23.5 18.1
Total cholesterol, mg/dL 201.1 ± 40.9 200.6 ± 37.9 20.6 ± 42.0 199.0 ± 39.5
High-density lipoprotein, mg/dL 53.7 ± 15.3 53.1 ± 14.6 53.4 ± 15.3 55.2 ± 15.1
Statin use, % 17.3 10.0 15.2 13.6
History of stroke, % 5.2 4.4 2.4 3.2
History of myocardial infarction, % 10.0 5.9 5.1 8.4
eGFR < 60 ml/min/m2, % 11.4 7.5 4.8 11.3
ACR ≥ 30, % 12.8 6.3 6.3 7.2
High sensitivity c-reactive protein, mg/L 3.4 (1.7 – 6.6) 3.1 (1.2 – 5.7) 2.8 (1.2 – 5.7) 1.9 (0.9 – 4.1)
Mean daytime systolic blood pressure, mm Hg 131.4 ± 14.5 129.2 ± 12.9 129.5 ± 13.1 128.6 ± 13.3
Mean daytime diastolic blood pressure, mm Hg 76.9 ± 9.3 78.8 ± 9.4 77.8 ± 8.7 77.6 ± 9.4
Prevalent hypertension, % 72.5 66.0 65.2 61.0
Antihypertensive medication useb, % 67.7 58.1 56.5 55.0
Antihypertensive medicationsb, %     
 Diuretic 74.1 61.2 64.5 71.7
 Beta blocker 23.4 28.8 23.9 18.1
 Calcium channel blocker 41.1 35.3 37.0 32.3
 Angiotensin converting enzyme inhibitors 45.6 33.8 37.0 39.4
 Angiotensin receptor blockers 12.7 11.5 15.2 9.5
  1. Numbers in table are percentages or mean ± standard deviation except high-sensitivity c-reactive protein which is median (25th – 75th percentiles)
  2. aHigher score = more physical activity
  3. eGFR: estimated glomerular filtration rate; ACR: albumin to creatinine ratio
  4. bAmong participants taking ≥ 1 antihypertensive medication