Concentration-Response Relationship between PM_2.5 and Daily Respiratory Deaths in China: A Systematic Review and Metaregression Analysis of Time-Series Studies

Table 3

Sensitivity analysis of single-day lags.

Study omitted	Combined estimate	95% confidence interval
Cao et al. (2012)	0.26	(0.05, 0.48)
Feng et al. (2015)	0.30	(0.08, 0.52)
Guo et al. (2016)	0.35	(0.24, 0.45)
Li et al. (2013)	0.31	(0.04, 0.57)
Li et al. (2015)	0.29	(0.09, 0.50)
Lin et al. (2016)	0.25	(0.05, 0.45)
Overall	0.30	(0.10, 0.50)