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. 2021 Aug 24;46(22):1551–1556. doi: 10.1097/BRS.0000000000004204

TABLE 1.

Bivariate Comparison of Baseline Demographics and Surgical Characteristics

Pre-COVID During-COVID P-Value
N % N %
Total 60 57 0.782
Gender 28 46.7% 27 47.4% 0.939
ASA 0.100
 1 0 0.0% 0 0.0%
 2 16 26.7% 24 42.1%
 3 42 70.0% 33 57.9%
 4 2 3.3% 0 0.0%
 5 0 0.0% 0 0.0%
Revision 27 45.0% 26 45.6% 0.877
3CO 6 10.0% 11 19.3% 0.154
Mean SD Mean SD P-Value
Age 67.5 11.8 61.4 14.5 0.015
Levels fused 7.5 2.97 9.1 3.45 0.007
EBL 1126.5 729.6 1762.1 1424.6 0.002

3CO indicates three-column osteotomy; ASA, American Society of Anesthesiologists; EBL, estimated blood loss.

Bolded p-values indicate statistical significance.