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

Table 4

Sensitivity analysis of multiday lags.

Study omitted	Combined estimate	95% confidence interval
Feng et al. (2015)	0.69	(0.55, 0.83)
Geng et al. (2013)	0.70	(0.56, 0.83)
Kan et al. (2007)	0.68	(0.54, 0.82)
Li et al. (2013)	0.77	(0.56, 0.99)
Li et al. 2 (2013)	0.71	(0.55, 0.86)
Lin et al. (2016)	0.68	(0.54, 0.82)
Ma et al. (2011)	0.68	(0.54, 0.82)
Sun et al. (2015)	0.67	(0.53, 0.81)
Yang et al. (2012)	0.68	(0.54, 0.82)
Overall	0.69	(0.55, 0.83)