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Table 2 VAS and morphine use for the three OPRM -172T>G genotypic groups

From: Ethnicity and OPRM variant independently predict pain perception and patient-controlled analgesia usage for post-operative pain

VAS (average)*

Chinese (n = 610)

Malays (n = 238)

Indians (n = 135)

All (n = 983)

TT (n = 8)

0.14 (0.11)

-

1.43 (0.00)

0.14 (0.39)

GT (n = 156)

0.43 (0.43)

0.29 (0.29)

0.57 (0.38)

0.43 (0.36)

GG (n = 819)

0.29 (0.36)

0.43 (0.36)

0.71 (0.43)

0.43 (0.36)

Morphine/kg bodyweight (× 100)*

TT (n = 8)

11.6 (12.6)

-

29.4 (11.5)

11.6 (15.4)

GT (n = 156)

5.3 (4.9)

8.1 (5.9)

18.9 (10.2)

6.3 (6.5)

GG (n = 819)

6.3 (6.7)

9.1 (8.5)

15.7 (11.2)

7.8 (8.0)

  1. *Median and semi-interquartile range