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. 2020 Jun 3;1(6):190–197. doi: 10.1302/2633-1462.16.BJO-2020-0035.R1

Table I.

Summary of results from ‘COVID’ and ‘COVID-free’ sites.

COVID Site COVID-free Site p-value
Patients (n = 47) 12 35
 Male 5 23 p = 0.1822
 Female 7 12
Age (years)
 Mean 86.8 (SD 6.4) 78.5 (SD 13.3) p = 0.0427*
 Range 79 to 100 37 to 96
Operations
 DHS 3 6 p = 0.0740
 Cannulated screws 0 3
 Hemiarthroplasty 9 9
 IM Nail 0 12
 THR 0 3
 Revision 0 2
Time to surgery (hrs)
 Mean 52.8 (SD 30.1) 29.8 (SD 26.1) p = 0.0146*
 Range 18.8 to 119.5 4.6 to 152.4
Length of stay (days)
 Mean 12.6 (SD 7.7) 8.7 (SD 3.8) p = 0.0592
 Range 4 to 28 3 to 24
Tested for COVID-19 12 24
 Positive swab result 6 0 p = 0.0005*
 Negative swab result 6 24
Follow-up (days)
 Mean 27.3 24.7
 Range 12 to 41 12 to 41
Mortalities 3 2 p = 0.0971

DHS, dynamic hip screw; IM nail, intramedullary nail; THR, total hip arthroplasty; revision, revision operation for periprosthetic fracture or failure.

*

Statistically significant (p < 0.05)

Fisher’s exact test for categorical data, Student’s unpaired t-test for continuous data, and Grubb’s test for outliers.