Table 3: Median and total frequencies of patients’ requests for analgesics 24 h, 48 h, and 72 h postoperatively (n = 32).

Median [25,75 %]; frequency 1st TKA 2nd TKA p-Value
Postoperative 24h - - -
   Ketoprofen (50 mg) 1 [0,1]; 18 1 [0,1]; 16 -
   diclofenac sodium (50 mg) 2 [1,2]; 54 2 [1,2]; 53 -
   Pentazocine (15 mg) 1 [0,1]; 30 1 [1,2]; 42 -
   Total Frequency 102 111 0.086
Postoperative 48h - - -
   Ketoprofen (50 mg) 0 [0,0]; 6 0 [0,0]; 5 -
   diclofenac sodium (50 mg) 1 [1,1]; 31 1 [1,1]; 32 -
   Pentazocine (15 mg) 0 [0,0]; 6 0 [0,0]; 6 -
Total Frequency 43 43 0.921
Postoperative 72h - - -
   Ketoprofen (50 mg) 0 [0,0]; 0 0 [0,0]; 2 -
   diclofenac sodium (50 mg) 2 [2,2]; 63 2 [2,2]; 61 -
   Pentazocine (15 mg) 0 [0,0]; 0 0 [0,0]; 0 -
   Total Frequency 63 63 0.999
   Accumulated Total frequency (24h + 48h + 72 h) 208 217 0.323
*p < 0.001,
r = 0.623

TKA: total knee arthroplasty

* p <0.05 was considered statistically significant.