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. Author manuscript; available in PMC: 2023 Feb 1.

Published in final edited form as: Cancer Epidemiol. 2021 Dec 2;76:102077. doi: 10.1016/j.canep.2021.102077

Table 3:

Odds Ratios for brain tumor risk and mode of delivery for children (<20 years; births 1978–2013 and diagnoses 1978–2016)

	Vacuum		Forceps		Cesarean section
	Cases N(%)	OR^a	Cases N(%)	OR^a	Cases N(%)	OR^a
CNS tumors	168 (10.0)	0.99 (0.84, 1.18)	19 (1.1)	1.26 (0.78, 2.03)	370 (22.1)	1.20 (1.06, 1.36)
Astrocytoma	63 (12.2)	1.19 (0.89, 1.58)	<5	---	108 (20.9)	1.26 (1.00, 1.58)
Ependymoma	20 (17.0)	1.74 (1.02, 2.96)	<5	---	18 (15.3)	0.90 (0.52, 1.54)
Medulloblastoma	16 (8.8)	0.90 (0.52, 1.55)	<5	---	44 (24.3)	1.26 (0.87, 1.82)

^a

Models adjust for maternal age and birth order.