Table 1 Open in new tab Age-standardized...

Baseline characteristics	History of PL reported either at baseline or during follow-up
No.	71 034	24 431
Age,^a years	38.9 (4.64)	38.38 (4.63)
Total physical activity, h/week	2.75 (4.06)	2.77 (3.97)
AHEI-2010 dietary score	47.56 (10.66)	48.01 (10.72)
Alcohol, g/day	3.05 (6.01)	2.96 (5.67)
Gravidity	2.32 (1.21)	3.38 (1.69)
History of induced abortion	15	17
History of infertility	19	30
Premenopausal	86	93
Parous	89	87
History of gestational diabetes	5	6
History of hypertensive disorders of pregnancy	13	15
Ever or currently married	96	97
Aspirin use^b	7	8
Parental history of myocardial infarction or stroke	26	27
BMI at age 18 years, kg/m²	21.06 (3.02)	21.05 (3.08)
Current BMI
<25 kg/m²	62	63
25–29.9 kg/m²	23	22
≥30 kg/m²	15	15
Smoking status
Never	65	65
Past	24	24
Current	11	11
Race/ethnicity
Non-Hispanic White	92	93
Non-Hispanic Black	2	1
Hispanic	2	2
Other	4	4

Baseline characteristics	History of PL reported either at baseline or during follow-up
No.	71 034	24 431
Age,^a years	38.9 (4.64)	38.38 (4.63)
Total physical activity, h/week	2.75 (4.06)	2.77 (3.97)
AHEI-2010 dietary score	47.56 (10.66)	48.01 (10.72)
Alcohol, g/day	3.05 (6.01)	2.96 (5.67)
Gravidity	2.32 (1.21)	3.38 (1.69)
History of induced abortion	15	17
History of infertility	19	30
Premenopausal	86	93
Parous	89	87
History of gestational diabetes	5	6
History of hypertensive disorders of pregnancy	13	15
Ever or currently married	96	97
Aspirin use^b	7	8
Parental history of myocardial infarction or stroke	26	27
BMI at age 18 years, kg/m²	21.06 (3.02)	21.05 (3.08)
Current BMI
<25 kg/m²	62	63
25–29.9 kg/m²	23	22
≥30 kg/m²	15	15
Smoking status
Never	65	65
Past	24	24
Current	11	11
Race/ethnicity
Non-Hispanic White	92	93
Non-Hispanic Black	2	1
Hispanic	2	2
Other	4	4

Table 1

Age-standardized baseline (1993) demographic characteristics, lifestyle factors, health conditions, and medical histories according to pregnancy loss reported either at baseline or during follow-up among 95 465 ever-gravid women in the Nurses’ Health Study II

Baseline characteristics	History of PL reported either at baseline or during follow-up
Baseline characteristics	No	Yes
No.	71 034	24 431
Age,^a years	38.9 (4.64)	38.38 (4.63)
Total physical activity, h/week	2.75 (4.06)	2.77 (3.97)
AHEI-2010 dietary score	47.56 (10.66)	48.01 (10.72)
Alcohol, g/day	3.05 (6.01)	2.96 (5.67)
Gravidity	2.32 (1.21)	3.38 (1.69)
History of induced abortion	15	17
History of infertility	19	30
Premenopausal	86	93
Parous	89	87
History of gestational diabetes	5	6
History of hypertensive disorders of pregnancy	13	15
Ever or currently married	96	97
Aspirin use^b	7	8
Parental history of myocardial infarction or stroke	26	27
BMI at age 18 years, kg/m²	21.06 (3.02)	21.05 (3.08)
Current BMI
<25 kg/m²	62	63
25–29.9 kg/m²	23	22
≥30 kg/m²	15	15
Smoking status
Never	65	65
Past	24	24
Current	11	11
Race/ethnicity
Non-Hispanic White	92	93
Non-Hispanic Black	2	1
Hispanic	2	2
Other	4	4

Baseline characteristics	History of PL reported either at baseline or during follow-up
Baseline characteristics	No	Yes
No.	71 034	24 431
Age,^a years	38.9 (4.64)	38.38 (4.63)
Total physical activity, h/week	2.75 (4.06)	2.77 (3.97)
AHEI-2010 dietary score	47.56 (10.66)	48.01 (10.72)
Alcohol, g/day	3.05 (6.01)	2.96 (5.67)
Gravidity	2.32 (1.21)	3.38 (1.69)
History of induced abortion	15	17
History of infertility	19	30
Premenopausal	86	93
Parous	89	87
History of gestational diabetes	5	6
History of hypertensive disorders of pregnancy	13	15
Ever or currently married	96	97
Aspirin use^b	7	8
Parental history of myocardial infarction or stroke	26	27
BMI at age 18 years, kg/m²	21.06 (3.02)	21.05 (3.08)
Current BMI
<25 kg/m²	62	63
25–29.9 kg/m²	23	22
≥30 kg/m²	15	15
Smoking status
Never	65	65
Past	24	24
Current	11	11
Race/ethnicity
Non-Hispanic White	92	93
Non-Hispanic Black	2	1
Hispanic	2	2
Other	4	4

Values are given as mean (standard deviation) or percentages and are standardized to the age distribution of the study population.

PL, pregnancy loss.

Value is not age-adjusted.

Aspirin or aspirin-containing products used regularly at least once per week in the past 2 years.

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