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. 2021 Feb 24;16:155. doi: 10.1186/s13018-021-02301-z

Table 3.

Comparing COVID-19-positive vs COVID-19-negative patients in group C

Variable COVID-19 positive (n = 34) COVID-19 negative (n = 242) p value
Age, years, mean (SD) 85.0 (7.7) 80.8 (11.5) 0.043
Gender %, M:F 41.2:58.8 36.5:63.5 0.598
ASA, n (%)
 1 0 4 (1.7) 0.449
 2 6 (17.7) 67 (27.7) 0.209
 3 18 (52.9) 122 (50.4) 0.800
 4 10 (29.4) 48 (19.8) 0.182
 5 1 (2.9) 0 0.707
CCI, mean (SD) 5.4 (1.4) 5.2 (2.2) 0.355
NHFS, mean (SD) 5.8 (1.5) 4.8 (1.7) 0.001
Time to surgery, h, mean (SD) 54.8 (60.1) 42.1 (29.2) 0.423
Length of stay, days, mean (SD) 17.6 (8.9) 14.7 (10.8) 0.014
Mortality, n (%) 13 (38.2) 14 (5.8) < 0.001

SD standard deviation, ASA American Society for Anaesthesiology, M male, F female, CCI Charlson Comorbidity Index, NHFS Nottingham Hip Fracture Score