Oral Pregabalin in Cardiac Surgery: A Systematic Review and Meta-Analysis of Randomized Controlled Trials

Table 2

Subgroup analysis preoperative basic information of two groups.

Variable	Number of studies	WMD/OR(95% CI)		Effects models	value
Age	6	0.71 (-1.10-2.52)	0%	Fixed-effects models	0.44
Weight	6	-1.16 (-3.31-0.99)	0%	Fixed-effects models	0.29
Height	5	-0.26 (-2.02-1.50)	15%	Fixed-effects models	0.80
Hypertension	5	1.40 (0.85-2.30)	47%	Fixed-effects models	0.18
Diabetes	4	0.80 (0.47-1.37)	0%	Fixed-effects models	0.42
Antihypertensive drugs preoperative
Beta-blocks	4	0.67 (0.36-1.27)	0%	Fixed-effects models	0.23
Ca channel antagonist	3	1.13 (0.57-2.26)	0%	Fixed-effects models	0.72
ACE inhibitors	4	0.85 (0.50-1.43)	0%	Fixed-effects models	0.53
Diuretics	3	1.13 (0.57-2.24)	0%	Fixed-effects models	0.73