Table 4.

Predicted glioma incidence trends for both genders (20–59 years) during 2003–2013

Scenario	Latency	RR=1.5		RR=2		RR=2.5		RR=3
		APC	95% CI	APC	95% CI	APC	95% CI	APC	95% CI
All users	1	1.1	(0.3 to 1.8)	1.6	(1 to 2.3)	2.0	(1.4 to 2.6)	2.3	(1.7 to 2.8)
	5	2.8	(2 to 3.5)	4.5	(3.8 to 5.2)	5.7	(5.1 to 6.4)	6.6	(6 to 7.3)
	10	2.7	(1.9 to 3.6)	4.9	(4.1 to 5.7)	6.7	(5.9 to 7.5)	8.2	(7.4 to 8.9)
	15	1.3	(0.5 to 2.2)	2.5	(1.7 to 3.4)	3.7	(2.8 to 4.5)	4.8	(3.9 to 5.6)
	20	0.2	(−0.7 to 1)	0.3	(−0.5 to 1.2)	0.5	(−0.4 to 1.3)	0.6	(−0.2 to 1.5)
High users	1	0.3	(−0.6 to 1.1)	0.5	(−0.3 to 1.3)	0.7	(−0.1 to 1.5)	0.9	(0.1 to 1.6)
	5	0.6	(−0.2 to 1.5)	1.2	(0.4 to 2)	1.8	(1 to 2.6)	2.2	(1.5 to 3)
	10	0.3	(−0.6 to 1.1)	0.5	(−0.3 to 1.4)	0.8	(−0.1 to 1.6)	1.0	(0.2 to 1.9)
	15	0.3	(−0.6 to 1.1)	0.5	(−0.3 to 1.4)	0.8	(−0.1 to 1.6)	1.0	(0.2 to 1.9)
	20	0.0	(−0.8 to 0.9)	0.1	(−0.8 to 0.9)	0.1	(−0.8 to 0.9)	0.1	(−0.7 to 1)

Regular users and high users				RR=1.5 (R), 2 (H)		RR=1.5 (R), 2.5 (H)		RR=1.5 (R), 3 (H)
	1			1.2	(0.5 to 1.9)	1.3	(0.6 to 2)	1.4	(0.8 to 2.1)
	5			3.2	(2.4 to 3.9)	3.5	(2.8 to 4.3)	3.9	(3.1 to 4.6)
	10			3.2	(2.4 to 4)	3.6	(2.8 to 4.4)	4.0	(3.2 to 4.8)
	15			1.5	(0.7 to 2.4)	1.8	(0.9 to 2.6)	2.0	(1.2 to 2.9)
	20			0.2	(−0.7 to 1)	0.2	(−0.6 to 1.1)	0.2	(−0.6 to 1.1)

APC, annual percentage change; RR, relative risk.