Table 2: Summary of conclusive findings.

Independent variableMean LOS value

ASA score 0.631
 ≤2 ( )
 >2 ( )
2.64 days
2.71 days
Day of surgery (THA) 0.005
 Tuesday ( )
 Thursday ( )
2.51 days
3.11 days
Day of surgery (TKA) 0.035
 Tuesday ( )
 Thursday ( )
2.46 days
2.76 days
Day of surgery (primary THA) 0.099
 Tuesday ( )
 Thursday ( )
2.57 days
3.04 days
Day of surgery (primary TKA) 0.160
 Tuesday ( )
 Thursday ( )
2.40 days
2.60 days
PACU arrival time 0.001
 Before 1400 ( )
 After 1400 ( )
2.49 days
2.60 days
Case number 0.022
 Case 1 or 2 ( )
 Case 3, 4, or 5 ( )
2.59 days
2.95 days
THA location of discharge 0.019
 Home ( )
 Secondary care facility ( )
2.55 days
3.04 days
TKA location of discharge 0.0002
 Home ( )
 Secondary care facility ( )
2.35 days
2.87 days
THA anesthesia administered 0.0006
 General endotracheal ( )
 Spinal regional ( )
3.28 days
2.54 days
TKA anesthesia administered 0.095
 General endotracheal ( )
 Spinal regional ( )
2.78 days
2.51 days
THA surgery complexity 0.850
 Simple THA ( )
 More complex THA ( )
2.78 days
2.80 days
TKA surgery complexity 0.020
 Simple TKA ( )
 More complex TKA ( )
2.49 days
4.00 days