. Author manuscript; available in PMC: 2020 Mar 4.

Published in final edited form as: Epidemiology. 2019 Nov;30(Suppl 2):S17–S27. doi: 10.1097/EDE.0000000000001070

TABLE 2.

Associations of Birth Weight for Gestational Age Percentile (bw/ga) with Semen Outcomes at Mean Age 44 Years

	Sperm Concentration^a (×10³/mL) B^b (95% CI)	<15 Million Sperm/mL OR^b (95% CI)
bw/ga	n = 193
Continuous	0.02 (0.004, 0.04)	0.99 (0.98,1.0)
≥85th vs. <85th percentile	1.1 (−0.39, 2.6)	1.1 (0.39, 3.3)
≥95th vs. <95th percentile	2.8 (−0.01, 5.6)	^c
	Percent Progressive Motility B (95% CI)	<32% Progressive Motility OR (95% CI)

bw/ga	n = 193
Continuous	0.03 (−0.05, 0.11)	0.99 (0.98. 1.0)
≥85th vs. <85th percentile	2.1 (−5.3, 9.5)	0.66 (0.23, 1.9)
≥95th vs. <95th percentile	−2.9 (−17, 11)	1.4 (0.23, 8.5)
	Percent Normal Morphology B (95% CI)	<4% Normal Morphology OR (95% CI)

bw/ga	n = 192
Continuous	−0.01 (−0.03, 0.02)	1.0 (0.99, 1.0)
≥85th vs. <85th percentile	0.50 (−1.5, 2.5)	1.2 (0.40, 3.4)
≥95th vs. <95th percentile	2.8 (−0.98, 6.5)	^c

Square-root transformed.

Adjusted for abstinence time.

Model diverged.