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Table 2 Comparison between VAS pain scores and basic characteristics categories

From: The use of intrathecal morphine for acute postoperative pain in lower limb arthroplasty surgery: a survey of practice at an academic hospital

Variable   VAS pain scores n (%) p-value
  None Mild 1–3 Moderate 4–6 Severe > 6
Age in years < 40 3 (43) 2 (29) 1 (14) 1 (14) 0.45
40–49 2 (40) 1 (20) 2 (40) 0 (0)
50–59 4 (21) 10 (53) 4 (21) 1 (5)
60–69 4 (17) 14 (61) 1 (4) 4 (18)
70+ 2 (17) 6 (50) 2 (17) 2 (17)
Weight Median (IQR) 73 (60–85) 70 (65–80) 73 (69–79) 75 (75–81) 0.48
ASA I 1 (12) 5 (63) 1 (12.5) 1 (12.5) 0.61
II 13 (25) 26 (49) 9 (17) 5 (9)
III 1 (20) 2 (40) 0 (0) 2 (40)
Surgery THR 11 (23) 24 (50) 9 (19) 4 (8) 0.34
TKR 4 (22) 9 (50) 1 (6) 4 (22)
  1. VAS Visual Analogue Scale