Table 1.

Table of regression estimates of incidence rates

Diagnosis	Group (tkr)	No. of cases	Incidence trend estimate	95% CI	P value
Meningioma	0–99	1253	− 0.187	− 0.248; − 0.126	< 0.001
Meningioma	100–199	4078	0.043	0.016; 0.070	0.005
Meningioma	200–599	293	0.585	0.460; 0.709	< 0.001
Meningioma	600+	51	− 0.114	− 0.368; 0.139	0.338
Low-grade glioma	0–99	179	− 0.013	− 0.043; 0.017	0.369
Low-grade glioma	100–199	923	0.016	0.003; 0.029	0.019
Low-grade glioma	200–599	94	0.178	0.128; 0.228	< 0.001
Low-grade glioma	600+	20	− 0.286	− 1.111; 0.540	0.448
High-grade gliom	0–99	987	− 0.026	− 0.128; 0.075	0.580
High-grade gliom	100–199	3599	0.081	0.070; 0.092	< 0.001
High-grade gliom	200–599	296	0.292	0.202; 0.381	< 0.001
High-grade gliom	600+tkr	119	− 1.029	− 1.720; − 0.339	0.007