Presence of GO

Type of drug

CCB

Non CCB

Statistical test-Chi-square

GO present

29 (31.5%)

5 (6.9%)

χ² yates = 13.39: 1 df: P = 0.000^**

GO absent

63 (68.5%)

67 (93.1%)

OR = 6.17 (95% CI 0.21 - 19.45)