The Effect of Pulmonary Rehabilitation on Respiratory Functions, and the Quality of Life, following Coronary Artery Bypass Grafting: A Randomised Controlled Study

Table 4

Comparison of total mean scores of PFT parameters (FVC, FEV₁, FVC/FEV₁) in intervention (PR) and control groups.

	Intervention (PR) Group	Control Group	Test results	p value	Effect size; (d)	95% Confidence interval
	Mean ± SD	Mean ± SD				Lower	Upper
FVC, % predicted
Preoperative baseline	89.96±21.9	81.72±15.5		0.132	-0.433	-0.136	0.997
4^th Day of Clinical Care	51.28±14.9	42.76±11.3		0.027	-0.643	0.072	1.210
p value
Test results
FEV1, % predicted
Preoperative baseline	91.12±20.6	82.56±16.0		0.109	-0.462	-0.100	1.023
4^th Day of Clinical Care	53.16±15.1	44.28±11.5		0.024	-0.658	0.088	1.228
p value
Test results
FEV1/FVC, % predicted
Preoperative baseline	107.52±10.4	108.56±12.3		0.749	0.091	-0.645	0.463
4^th Day of Clinical Care	109.88±10.4	109.08±14.3		0.823	-0.064	-0.490	0.618
Test results
p value

PR: pulmonary rehabilitation; PFT: pulmonary function test; FEV1: challenging expiratory volume; FVC: challenging vital capacity; independent samples -test; paired samples -test .