Table 3.

The 1-, 3-, and 5-year survival rates of pineal gland tumors in four periods.

Periods	Time (months)	Number at Risk	Number of Events	Survival rate (%)	95% Confidence Interval
					Lower	Upper
2005-2016	12	910	120	89.0 %	87.2 %	90.9 %
	36	665	59	82.6 %	80.2 %	84.9 %
	60	483	23	79.3 %	76.7 %	82.0 %
1995-2004	12	337	57	85.4 %	81.9 %	88.9 %
	36	298	36	76.1 %	72.0 %	80.5 %
	60	277	17	71.7 %	67.4 %	76.3 %
1985-1994	12	136	25	84.4 %	78.9 %	90.2 %
	36	116	19	72.5 %	65.9 %	79.8 %
	60	110	6	68.8 %	61.9 %	76.3 %
1975-1984	12	66	25	72.2 %	63.5 %	82.1 %
	36	44	21	48.9 %	39.6 %	60.4 %
	60	41	3	45.6 %	36.3 %	57.1 %