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Table 2 Baseline Characteristics of 97 patients

From: 25-hydroxyvitamin D deficiency, exacerbation frequency and human rhinovirus exacerbations in chronic obstructive pulmonary disease

  COPD patients (n = 97)
Mean (SD)
Age (years) 71.8 (8.8)
FEV1 (litre) 1.19 (0.54)
FEV1 (% predicted) 50.3 (19.7)
FVC (litre) 2.5 (0.84)
BMI (kgm-2) 27.0 (6.0)
Pack years smoking 50.7 (34.2)
SpO2 (%) on air 95 (2)
25-hydroxyvitamin D nmol/L Median (IQR)
Summer 41.3 (26.8 – 64.8)
Winter 27.8 (19.4 – 44.4)
  Number (%)
Male 61 (62.9)
Frequent exacerbators 28 (28.9)
Current smokers 25 (25.8)