[Retracted] Analysis of Influencing Factors for Exercise Ventilation Efficiency of COPD Patients

Table 3

Correlation of EqCO₂ and anthropometric characteristics.

		BMI	Body height	Body weight	Age
EqCO2 at	Pearson correlation	−0.308	0.162	−0.214	0.246
	value	0.012	0.194	0.085	0.046
	n	66	66	66	66
EqCO2 max	Pearson correlation	−0.185	0.113	−0.124	0.250
	value	0.117	0.343	0.297	0.033
	n	73	73	73	73
EqCO2 rest	Pearson correlation	−0.437	0.271	−0.219	0.178
	value	0.000	0.028	0.078	0.154
	n	66	66	66	66

significant difference,  < 0.05.