Table 1

Demographic characteristics

ParameterNever-COVID
(n=9)
All COVID participants
Ever-COVID
(n=76)
Ever hospitalised
(n=23)
Never hospitalised
(n=53)
Sig. p value
Age, years36 (12)53 (12)57 (13)52 (12)<0.001
Female, n (%)5 (56)38 (50)5 (22)33 (62)0.001
BMI, kg/m226 (5)30 (5)31 (5)29 (6)0.07
SpO2, %97 (2)*97 (2)97 (2)97 (2)0.4
Heart rate, beats/min87 (20)*77 (13)82 (14)76 (12)0.05
Blood pressure, mm Hg118/79 (18/12)*125/81 (14/10)124/81 (15/11)124/81 (15/9)
Weeks since positive COVID-19 test (mean/median: min–max)N/A(13.8/12.0: 5.0–53.4)(15.2/12.0: 5.0–53.4)(13.2/12.0: 5.0–39.6)0.3
Smoking history, pack-years0 (0)8 (18)10 (21)8 (16)0.3
No prior respiratory illness, n (%)9 (100)49 (64)16 (70)33 (62)0.5
Prior respiratory illness, n (%)0 (0)27 (36)7 (30)20 (38)0.5
 Asthma, n (%)0 (0)21 (26)5 (22)16 (30)0.4
 COPD, n (%)0 (0)6 (8)2 (9)4 (8)0.9
Hospital admission daysN/A13 (16)13 (16)N/A
  • Age and the proportion of women is significantly different between groups.

  • Values are reported as mean (SD) unless otherwise indicated.

  • p=significance value for analysis of variance between never-COVID, ever-hospitalised and never-hospitalised.

  • *n=6.

  • BMI, body mass index; COPD, chronic obstructive pulmonary disease; SpO2, pulse oximetry estimation of arterial blood oxygen saturation made on a fingertip.