Table 5.

Univariate competing-risks regression analysis based on different years at diagnosis.

Year of diagnosis	Before PSM		After PSM
	HR (95% CI)	P Value	HR (95% CI)	P Value
2004–2009
Chemotherapy	0.584 (0.280–1.220)	0.153	0.518 (0.241–1.112)	0.092
No evidence	Reference		Reference
2010–2015
Chemotherapy	0.326 (0.117–0.912)	0.033	0.339 (0.118–0.970)	0.044
No evidence	Reference		Reference

HR, hazard ratios; PSM, propensity score matching; 95% CI, 95% confidence interval.

The bold values mean P value < 0.05.