Table 1 Characteristicsa of the analytic cohort at Visit 4, ARIC.

From: Waist circumference-years and cancer risk: a prospective study of the association and comparison of predictive performance with waist circumference and body mass index

Characteristic

Men

Women

Overall N = 4536

≤ Median WC (cm) N = 2321

> Median WC (cm) N = 2215

Overall N = 5636

≤ Median WC (cm) N = 2827

> Median WC (cm) N = 2809

Age at baseline, years, mean (SD)

62.9 (5.7)

63.0 (5.7)

62.8 (5.6)

62.3 (5.6)

62.1 (5.6)

62.5 (5.5)

Heighta, metres, mean (SD)

1.8 (0.1)

1.7 (0.1)

1.8 (0.1)

1.6 (0.1)

1.6 (0.1)

1.6 (0.1)

BMI at baselinea, kg/m2, mean (SD)

28.5 (4.5)

25.5 (2.5)

31.7 (3.9)

29.2 (6.4)

24.8 (3.3)

33.6 (5.7)

Mean WC at baselinea, cm, mean (SD)

103.0 (12.0)

94.0 (6.0)

112.0 (9.0)

101.0 (16.0)

88.0 (8.0)

114.0 (12.0)

Race, n (%)

 White

3685 (81.2)

1820 (78.4)

1865 (84.2)

4121 (73.1)

2261 (80.0)

1860 (66.2)

 Black

851 (18.8)

501 (21.6)

350 (15.8)

1515 (26.9)

566 (20.0)

949 (33.8)

Smoking, n (%)

 Ever

3266 (72.0)

1621 (69.8)

1645 (74.2)

2648 (47.0)

1377 (48.7)

1271 (45.2)

 Never

1238 (27.2)

682 (29.3)

556 (25.1)

2949 (52.3)

1432 (50.1)

1516 (54.0)

 Missing

32 (0.7)

18 (0.7)

14 (0.6)

39 (0.7)

18 (0.6)

21 (0.7)

 Alcohol consumption, units of alcohola per week, mean (SD)

3.9 (7.8)

3.9 (7.6)

4 (8.1)

1.2 (3.2)

1.6 (3.6)

0.8 (2.7)

 Missing

39 (0.8)

21 (0.9)

18 (0.8)

41 (0.7)

18 (0.6)

23 (0.8)

HRT, n (%)

 Ever

 

2045 (36.3)

1145 (40.5)

900 (32.0)

 Never

2071 (36.7)

913 (32.3)

1158 (41.2)

 Missing

1520 (27.0)

769 (27.2)

751 (26.7)

Education, n (%)

 Graduate or professional school

621 (13.7)

355 (15.3)

266 (12.0)

501 (8.9)

281 (9.9)

220 (7.8)

 At least some college

1337 (29.4)

654 (28.1)

683 (30.8)

1438 (25.5)

856 (30.3)

582 (20.7)

 Vocational school

438 (9.7)

217 (9.3)

221 (10.0)

447 (7.9)

233 (8.2)

214 (7.6)

 Completed high school

1253 (27.6)

625 (26.9)

628 (28.3)

2140 (38.0)

1049 (37.1)

1091 (38.8)

 High school but no degree

492 (10.8)

266 (11.5)

226 (10.2)

750 (13.3)

293 (10.4)

457 (16.3)

 Grade school or 0 years education

385 (8.5)

199 (8.6)

186 (8.4)

353 (6.3)

112 (4.0)

241 (8.6)

 Missing

10 (0.2)

5 (0.2)

5 (0.2)

7 (0.1)

3 (0.1)

4 (0.1)

  1. N number of participants, BMI body mass index, WC waist circumference, HRT hormone replacement therapy.
  2. aMean (SD); n ().
  3. Values in parentheses are percentages unless otherwise stated.
  4. Covariates are from the start of follow-up at Visit 4 except race and education which were collected at Visit 1.
  5. Baseline refers to Visit 4.
  6. BMI is calculated from weight and height that was measured in a standard way by trained technicians.
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