Inhaled Corticosteroids and the Risk of Lung Cancer in Chronic Obstructive Pulmonary Disease Patients: A Systematic Review and Meta-Analysis

Table 3

Metaregression analysis of possible covariates for lung cancer risk.

	Variable	Coefficients	value
1	Study design	0.100	0.358
2	Continents	-0.047	0.575
3	Smoking status	0.180	0.051
4	Latency period	-0.27	0.213