Table 1.

Sociodemographic, reproductive and health-related characteristics of the sample

U.S. women ages 15–44 years	All women (n=12,279) %	Oral contraceptive Users (n=2,032) %
Age group
15–24 years	34	42
25–34 years	32	37
35–39 years	17	14
≥40 years	17	11
Race/ethnicity
Hispanic	17	12
White	62	76
Black	15	9
Other	6	4
Education level
<High school diploma	13	6
High school diploma or GED	21	15
Any college	52	65
Still in high school	14	13
Residence
Urban	32	30
Suburban	48	48
Rural	20	21
Employment status
Employed	66	76
Unemployed	5	3
In school	10	10
At home/other	19	11
Poverty level
<200% federal poverty level	46	36
>200% federal poverty level	54	64
Insurance status
Fully insured last year	73	80
Uninsured during last year	27	20
Marital/cohabitation status
Married or cohabitating	53	67
Not married or cohabitating	47	33
Lifetime sexual intercourse experience
Yes	86	93
No	14	7
Sexually active in last 3 months
Yes	82	88
No	18	12
Age at menarche
<11 years	8	8
11–14 years	82	82
>14 years	10	10
Parity
0 childbirths	45	62
1 childbirths	16	17
>1 childbirths	39	21
Postpartum ≤3 months
Yes	2	1
No	98	99
Breastfeeding status
Currently breastfeeding	2	1
Not breastfeeding	98	99
History of gynecological problemsa
Yes	29	27
No	71	73
History of ovarian cysts
Yes	16	14
No	84	86
Gestational diabetes diagnosis
Yes	4	3
No	96	97
Non-gestational diabetes diagnosis
Yes	2	1
No	98	99
Body mass index
Underweight BMI <18.5	3	3
Normal weight BMI 18.5–24.9	46	53
Overweight BMI 25–29.9	23	22
Obese BMI ≥30	28	22
History of smoking in last year
None	74	82
< pack of cigarettes per day	18	15
≥ pack of cigarettes per day	8	4

^aGynecological problems may include ovulation problems, ovarian cysts, uterine fibroids or endometriosis. Results are presented as weighted percentages (%) of sociodemographic characteristics among all women and among oral contraceptive users.