Table 1.

Participant characteristics and mean FSH level in FSH subset, by smoking status.

	Nonsmokers		Smokers
Variable	No. of women (%)	FSH (mean ± SD)a	No. of women (%)	FSH (mean ± SD)a
Race*
White	72 (77.4)	0.36 ± 0.17	24 (75.0)	0.50 ± 0.48
Asian	15 (16.1)	0.51 ± 0.35	2 (6.3)	0.90 ± 0.50
Other	6 (6.5)	0.48 ± 0.20	6 (18.8)	0.32 ± 0.14
Age (years)
< 30	26 (27.9)	0.33 ± 0.22	12 (37.5)	0.36 ± 0.14
30–34	34 (36.6)	0.42 ± 0.20	12 (37.5)	0.40 ± 0.21
≥ 35	33 (35.5)	0.42 ± 0.22	8 (25.0)	0.81 ± 0.74
Pregnancy history
0 pregnancies	7 (7.5)	0.49 ± 0.38	1 (3.1)	0.46 ± 0.21
≥ 1 pregnancy, 0 losses	59 (63.4)	0.41 ± 0.22	20 (62.5)	0.52 ± 0.55
≥ 1 pregnancy, ≥ 1 loss	27 (29.0)	0.34 ± 0.15	11 (34.4)	0.45 ± 0.22
Education*
No college	21 (22.6)	0.44 ± 0.23	16 (50.0)	0.55 ± 0.62
Some college	29 (31.2)	0.38 ± 0.16	13 (40.6)	0.43 ± 0.22
College graduate	43 (46.2)	0.38 ± 0.25	3 (9.4)	0.53 ± 0.14
BMI (kg/m2)
< 19.1	6 (6.5)	0.47 ± 0.44	2 (6.3)	0.29 ± 0.08
19.1–27.3	66 (71.0)	0.39 ± 0.21	19 (59.4)	0.58 ± 0.54
> 27.3	21 (22.6)	0.38 ± 0.18	11 (34.4)	0.41 ± 0.31
MET score
0	42 (45.2)	0.43 ± 0.26	10 (31.2)	0.45 ± 0.25
> 0 to < 40	37 (39.8)	0.36 ± 0.19	16 (50.0)	0.55 ± 0.63
≥ 40	14 (15.0)	0.37 ± 0.16	6 (18.8)	0.45 ± 0.21
Caffeine (mg/day)*
0	35 (37.6)	0.35 ± 0.23	3 (9.4)	0.39 ± 0.19
< 300	48 (51.6)	0.41 ± 0.21	19 (59.4)	0.44 ± 0.22
≥ 300	10 (10.8)	0.48 ± 0.21	10 (31.2)	0.63 ± 0.76
Alcohol* (drinks/week)
0	26 (28.0)	0.45 ± 0.29	5 (15.6)	0.64 ± 0.91
1–3	64 (68.8)	0.38 ± 0.19	17 (53.1)	0.41 ± 0.18
≥ 4	3 (3.2)	0.29 ± 0.09	10 (31.3)	0.55 ± 0.37

MET, metabolic equivalence.

^aMean FSH for days −5 to 1 calculated for cycles (vs. woman basis). Data from Women’s Reproductive Health Study, California Department of Health Services.

*p < 0.05 for test of independence between smoking status and covariate.