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. 2020 Nov 19;19(5):e230–e236. doi: 10.1016/j.surge.2020.10.002

Table 4.

Secondary outcomes.

Secondary Outcomes 2018
2019
2020
2020 vs.
2018
2019
n % n % n % p-value
Primary Total Hip Replacement n191 n194 n32 <0.00001 <0.00001
Mean age/years 69 70 65 0.161 0.126
Females 118 61.8% 111 57.2% 21 65.6% 0.678 0.371
Males 73 38.2% 83 42.8% 11 34.4%
ASA
 1 18 19 1 0.369 0.094
 2 101 86 20
 3 31 45 4
 4 3 2 0 N/A N/A
 Missing 40 42 7
Mean length of Stay/days 3.8 3.9 3.3 0.985 0.902
30-day complications n27 N/A N/A
 Dislocation 3 1.6% 2 1.0% 0 0.0%
 Deep infection 1 0.5% 1 0.5% 0 0.0%
 Superficial infection 5 2.6% 5 2.6% 0 0.0%
 DVT/PE 0 0.0% 4 2.1% 0 0.0%
 Transfusion 9 4.7% 4 2.1% 0 0.0%
 Other complication 8 4.2% 12 6.2% 1 3.7%
Total Complications 26 12.6% 28 14.4% 1 3.7%
30-day readmissions 6 3.1% 8 4.5% 0 0.0%
Primary Total Knee Replacement n194 n176 n16 <0.00001 <0.00001
Mean age/years 71 69 61 0.031 0.078
Female 105 54.1% 97 55.1% 8 50.0% 0.750 0.694
Males 89 45.9% 79 44.9% 8 50.0%
ASA N/A N/A
 1 13 8 3 0.161 0.091
 2 115 90 10
 3 23 27 0 N/A N/A
 4 0 0 0 N/A N/A
 Missing 43 51 3
Mean length of Stay/days 3.3 3.8 3.1 0.152 0.350
30-day complications n13
 Deep infection 0 0.0% 0 0.0% 0 0.0%
 Superficial infection 6 3.1% 7 4.0% 0 0.0%
 DVT/PE 2 1.0% 2 1.1% 2 15.4%
 Transfusion 3 1.5% 1 0.6% 0 0.0%
 Other complication 5 2.6% 21 11.9% 1 7.7%
Total Complications 16 8.2% 31 17.6% 3 23.0%
30-day readmissions 2 1.0% 9 5.1% 1 7.7%