Skip to main content
. 2018 Dec 21;320(24):2553–2563. doi: 10.1001/jama.2018.19329

Table 2. Participants of the UK Biobank Included in This Studya.

Study UK Biobankb
Participants, No. 452 302
Sex, No. (%)
Men 206 951 (46)
Women 245 351 (54)
Age at baseline, mean (SD), y 57 (8)
Men 57 (8)
Women 57 (8)
Currently smoking, No. (%) 47 036 (10)
Men 25 165 (12)
Women 21 867 (9)
Body mass index, mean (SD) [No. missing]c 27.4 (4.8) [1594]
Men 27.9 (4.2)
Women 27.0 (5.1)
Waist-to-hip ratio, mean (SD) [No. missing] 0.87 (0.09) [883]
Men 0.94 (0.07)
Women 0.82 (0.07)
Waist circumference, mean (SD) [No. missing], cm 90 (13.5) [790]
Men 97 (11.4)
Women 85 (12.5)
Hip circumference, mean (SD) [No. missing], cm 103 (9.2) [838]
Men 104 (7.6)
Women 103 (10.3)
Systolic blood pressure, mean (SD) [No. missing], mm Hg 138 (19) [863]
Men 141 (17)
Women 135 (19)
Diastolic blood pressure, mean (SD) [No. missing], mm Hg 82 (10) [850]
Men 84 (10)
Women 81 (10)
a

The exact numbers of participants included in each genetic analysis are in eTable 1 in the Supplement.

b

Genotyping in the UK Biobank was performed using the Affymetrix UK BILEVE and UK Biobank Axiom arrays, with Haplotype Reference Consortium r1.1 as the imputational panel.

c

Calculated as weight in kilograms divided by height in meters squared.