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Table 1 Baseline characteristics of UK Biobank participants by sex-specific quintiles of serum urate

From: Serum urate and lung cancer: a cohort study and Mendelian randomization using UK Biobank

  Total Quintile of serum urate (µmol/L)
Men   89–294 295–332 333–367 368–411 411–600
Women   89–215 216–248 249–279 280–321 322–600
  N = 359,192 N = 71,716 N = 71,889 N = 71,745 N = 71,927 N = 71,915
Sex 166,618 (46.4%) 33,296 (46.4%) 33,320 (46.3%) 33,278 (46.4%) 33,380 (46.4%) 33,344 (46.4%)
Age at recruitment (IQR) 58.9 (51.3–64.0) 57.3 (49.4–63.1) 58.1 (50.3–63.5) 58.7 (51.3–63.8) 59.5 (52.3–64.2) 60.5 (53.7–64.9)
Weight (kg) 78.3 (15.8) 72.3 (14.0) 75.1 (14.5) 77.7 (14.9) 80.6 (15.5) 85.8 (16.5)
Height (cm) 168.8 (9.2) 169.0 (9.0) 169.0 (9.1) 168.9 (9.2) 168.8 (9.3) 168.4 (9.4)
BMI 27.4 (4.7) 25.2 (3.9) 26.2 (4.0) 27.1 (4.2) 28.2 (4.6) 30.2 (5.2)
Smoking status       
 Never 195,303 (54.4%) 41,107 (57.3%) 40,526 (56.4%) 39,585 (55.2%) 38,386 (53.4%) 35,699 (49.6%)
 Former 126,440 (35.2%) 21,763 (30.3%) 23,462 (32.6%) 24,988 (34.8%) 26,581 (37.0%) 29,646 (41.2%)
 Current 36,227 (10.1%) 8622 (12.0%) 7654 (10.6%) 6951 (9.7%) 6726 (9.4%) 6274 (8.7%)
 Missing 1222 (0.3%) 224 (0.3%) 247 (0.3%) 221 (0.3%) 234 (0.3%) 296 (0.4%)
Pack years of smoking (IQR)* 19.5 (10.0–32.5) 18.8 (9.3–31.5) 18.0 (9.0–30.6) 18.8 (9.5–31.5) 19.5 (10.1–32.5) 22.0 (12.0–35.5)
History of lung cancer 528 (0.15%) 101 (0.14%) 82 (0.11%) 98 (0.14%) 91 (0.13%) 156 (0.22%)
Family history of lung cancer 46,291 (12.9%) 8547 (11.9%) 8738 (12.2%) 9218 (12.8%) 9596 (13.3%) 10,192 (14.2%)
History of COPD/emphysema 8167 (2.3%) 1486 (2.1%) 1458 (2.0%) 1515 (2.1%) 1646 (2.3%) 2062 (2.9%)
  1. All continuous variables are mean values with ± 1 standard or medians for skewed data if interquartile ranges (IQRs) are specified
  2. *Previously calculated for 109,312 participants reporting to regularly smoke at least one cigarette/day and who also reported smoking duration