Table 1

Patient characteristics and comorbidities

VariableSwab-negative
N=381
Swab-positive
N=52
Total
Age (years)63.5 (23.5)67.0 (18.9)63.9 (23.0)
Sex, % male (N)48.6 (185)61.5 (32)50.1 (217)
Ever smoker, % (N)5.6 (21)11.8 (6)6.3 (27)
Comorbidities
Diabetes, % (N)
 Type 10.8 (3)2.0 (1)0.9 (4)
 Type 23.5 (13)5.9 (3)3.8 (16)
Diarrhoea, % (N)8.4 (30)26.0 (13)10.6 (43)
IHD, % (N)19.2 (72)25.5 (13)19.9 (85)
Asthma, % (N)12.0 (45)15.7 (8)12.4 (53)
Hypertension, % (N)11.4 (43)19.6 (10)12.4 (53)
Dementia, % (N)9.6 (36)11.8 (6)9.8 (42)
Frailty, % (N)13.3 (50)17.7 (9)13.8 (59)
ALD-CLD, % (N)1.3 (5)3.9 (2)1.6 (7)
Malignancy, % (N)4.0 (15)11.8 (6)4.9 (21)
PE, % (N)1.1 (4)2.0% (1)1.2 (5)
Vitamin D, nmol/L52.1 (30.3)51.9 (27.8)52.1 (30.0)
 Mean (SD)51 (26–72)49.5 (31.5–67.5)50.5 (27–72)
 Median (IQR) range9–1958–1328–195
Loge vitamin D3.77 (0.64)3.79 (0.60)3.77 (0.64)
 Mean (SD)3.93 (3.26–4.28)3.90 (3.44–4.22)3.93 (3.30–4.28)
 Median (IQR) range2.20–5.272.08–4.882.08–5.27
Vitamin D <25 nmol/L23.4 (89)19.2 (10)22.9 (99)
  • ALD, alcoholic liver disease; CLD, chronic liver disease; IHD, ischaemic heart disease; PE, pulmonary embolism.