Table 4.

Multiple linear regression analysis of clinical variables associated with hypercapnia.

	Coefficient	SE	95%CI	p Value
Age	−0.101	0.064	−0.229 to 0.026	0.118
Gender	2.127	1.292	−0.431 to 4.687	0.102
BMI	−0.214	0.269	−0.474 to 0.046	0.105
R5 whole breath	1.46	0.679	0.114 to 2.805	0.033
R20 whole breath	−1.138	0.693	−2.5116 to 0.234	0.103
Fres whole breath	−0.414	0.269	−0.948 to 0.118	0.126
X5 whole breath	−1.482	2.231	−5.903 to 2.938	0.507
ALX whole breath	0.21	0.179	−0.145 to 0.566	0.244