Table 4: Correlation between WBS score and the frequency of analgesic requests at each time point between the first and second total knee arthroplasty (TKA) procedure.
| Postoperative time |
24h |
48h |
72h |
| 1st TKA |
0.782 |
0.083 |
0.389 |
| 2nd TKA |
p = 0.002*, r = 0.567 |
0.329 |
0.973 |
Values are expressed as n or median [25 percentile, 75 percentile]. WBS: Wong–Baker FACES pain assessment scale [13], * p <0.05 was considered statistically significant.