Table 1

Baseline characteristics for SARDs and non-SARDs cohorts

SARDsNon-SARDsp Value
N6364-
N Female (%)59 (94)59 (92)0.75
Mean age in 2015 (SD)56.5 (13.1)57.0 (11.6)0.89
Median age in 2015 (IQR, range)57 (20)58 (14.5)
N with partner (%)42 (67)47 (73)0.41
N with children at home (%)
(n=5 missing responses)
21 (33)23 (36)0.76
N with high school education or less (%)17 (27)23 (36)0.28
N completed university (%)21 (33)20 (31)0.80
N Current or Former Smokers (%)30 (48%)29 (45%)0.79
Mean pack-years, among ever-smokers (SD) (n=3 missing responses) 10.6 (16.2)25.2 (36.0)0.06
Mean years of smoking, among ever-smokers (SD) (n=1 missing response) 16.7 (13.7)24.2 (13.4)0.04
Mean years since smoking cessation, among former smokers (SD)
(n=3 missing responses)
16.6 (13.6)17.3 (8.4)0.84
N consumed alcohol in past 12 months (%)47 (75)49 (77)0.79
Mean body mass index (BMI) (SD)24.4 (5.3)27.0 (6.4)0.01
N overweight (%) (BMI ≥25 kg/m2)21 (33)35 (55)0.02
N obese (%) (BMI ≥30 kg/m2)9 (14)21 (33)0.01
Mean BMI, corrected* (SD)25.5 (5.6)28.1 (6.8)0.02
N overweight, after correction* (%)25 (40)37 (58)0.04
N obese, after correction* (%)13 (21)24 (38)0.04
  • *Correction equations40 were applied to the original height and weight data to account for the fact that individuals tend to overestimate their height, and underestimate their weight, in self-reports.

  • SARDs, systemic autoimmune rheumatic diseases.