Table 2D
2011 Pregnancy Nutrition Surveillance (1)
Nation
Summary of Health Indicators


Summary of Health Indicators (2)
National Prevalence

Number Included
in Analysis

Prevalence
%

Prepregnancy BMI (3)
Underweight 953,682

4.5

Normal Weight 953,682

41.9

Overweight 953,682

26.0

Obese 953,682

27.6

 
Maternal Weight Gain (4)
Less Than Ideal 718,099

21.0

Ideal 718,099

30.9

Greater Than Ideal 718,099

48.0

 
Anemia (Low Hb/Hct) (5)
1st Trimester 367,551

7.3

2nd Trimester 282,218

11.6

3rd Trimester 142,563

33.8

Postpartum 282,614

28.3

 
Parity (6)
0 912,851

41.8

1 912,851

26.7

2 912,851

16.2

Greater Than or Equal To 3 912,851

15.4

 
Interpregnancy Interval
Less Than 6 Months 513,748

11.2

6 To Less Than 18 Months 513,748

24.8

Greater Than or Equal To 18 Months 513,748

64.0

 
Gestational Diabetes 441,207

5.7

 
Hypertension During Pregnancy 434,979

6.7

(1) Reporting period is January 1 through December 31.
(2) Excludes records with unknown data or errors.
(3) Based on 2009 IOM report, "Weight Gain During Pregnancy": underweight (BMI <18.5), normal weight (BMI 18.5 to 24.9), overweight (BMI 25.0 to 29.9), obese (BMI >30.0).
(4) Based on 2009 IOM report, "Weight Gain During Pregnancy": underweight during pregnancy (ideal weight gain = 28 to 40 pounds), normal weight prepregnancy
 (ideal weight gain = 25 to 35 pounds), overweight prepregnancy (ideal weight gain = 15 to 25 pounds), obese prepregnancy (ideal weight gain = 11 to 20 pounds).
(5) Based on 1990 CDC MMWR, "Recommendations to Prevent and Control Iron Deficiency in the United States"; adjusted for altitude and smoking.
(6) Number of times a woman has given birth to an infant 20 or more weeks gestation.
* Percentages are not calculated if <100 records are available for analysis after exclusions.

Table 2D
Pregnancy Nutrition Surveillance (1)
Nation
Summary of Health Indicators


Summary of Health Indicators (2)
National Prevalence

Number Included
in Analysis

Prevalence
%

Medical Care
1st Trimester 338,688

83.6

No Care 338,688

4.1

 
WIC Enrollment
1st Trimester 908,459

35.8

2nd Trimester 908,459

34.0

3rd Trimester 908,459

17.6

Postpartum (3) 908,459

12.5

 
Prepregnancy Mutivitamin Consumption (4) 362,231

19.7

Multivitamin Consumption During Pregnancy (5) 450,595

86.8

 
Smoking
3 Months Prior to Pregnancy 732,470

23.2

During Pregnancy 658,464

13.9

Last 3 Months of Pregnancy 651,490

12.5

Postpartum 654,687

14.1

 
Smoking Changes (6)
Quit Smoking by First Prenatal Visit 153,900

43.7

Quit Smoking by First Prenatal Visit
and Stayed Off Cigarettes
128,862

38.2

 
Smoking in Household
During Pregnancy 633,960

15.4

Postpartum 524,900

14.5

 
Drinking
3 Months Prior to Pregnancy 843,262

9.5

Last 3 Months of Pregnancy 606,728

0.5

(1) Reporting period is January 1 through December 31.
(2) Excludes records with unknown data or errors.
(3) Women who initially enrolled in WIC during the postpartum period.
(4) Women who reported taking a multivitamin four times a week or more in the month before pregnancy; proxy for folic acid consumption.
(5) Pregnant women who reported taking a multivitamin in the past month; proxy for prenatal iron consumption.
(6) Among women who smoked 3 months prior to pregnancy.
* Percentages are not calculated if <100 records are available for analysis after exclusions.

Table 2D
Pregnancy Nutrition Surveillance (1)
Nation
Summary of Health Indicators


Summary of Health Indicators (2)
National Prevalence

Number Included
in Analysis

Prevalence
%

Birthweight (3)
Very Low 828,329

1.1

Low 828,329

6.8

Normal 828,329

85.3

High 828,329

6.9

 
Preterm (4) 832,650

10.5

Full Term Low Birth Weight (5) 710,835

3.4

Multiple Births 848,496

1.7

 
Breastfeeding
Ever Breastfed 765,791

70.1

(1) Reporting period is January 1 through December 31.
(2) Excludes records with unknown data or errors.
(3) Very low birth weight (<1500 g), low birth weight (1500 - <2500 g), normal birth weight (2500 - <4000 g), high birth weight (>4000 g).
(4) <37 weeks gestation.
(5) 37 or more weeks gestation and <2500 g.