Table 3.

Genetically predicted age at menarche, age at menopause, and age at first birth with the risk of rheumatoid arthritis. Multivariable analysis adjusting for the effect of body mass index and year of education

Methods	#SNP	OR (95% CI)	P-value
Age at menarche
Body mass index	140	0.97 (0.83–1.13)	0.12
Year of education	316	1.07 (0.98–1.16)	0.11
Age at natural menopause
Body mass index	51	1.06 (0.99–1.27)	0.08
Year of education	54	1.04 (0.98–1.11)	0.18
Age at first birth
Body mass index	10	0.85 (0.57–1.24)	0.40
Year of education	10	1.10 (0.58–2.11)	0.76