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FP-5 Data Details

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FP-5 Reduce the proportion of pregnancies conceived within 18 months of a previous birth

About the Data

Description of the data source, numerator, denominator, survey questions, and other relevant details about the national estimate.

Data Source: 
National Survey of Family Growth
Changed Since the Healthy People 2020 Launch: 
Yes
Measure: 
percent
Baseline (Year): 
33.1 (2006–10)
Target: 
29.8
Target-Setting Method: 
10 percent improvement
Numerator: 

Number of females aged 15 to 44 years whose most recent pregnancy was conceived within 18 months of a previous live birth

Denominator: 

Number of females aged 15 to 44 years with at least two pregnancies

Comparable Healthy People 2010 Objective: 
Adapted from HP2010 objective
Questions Used to Obtain the National Baseline Data: 

    From the 2006 National Survey of Family Growth:

    [NUMERATOR:]

    [If a current pregnancy:] How many weeks or months pregnant are you now?

    [If a completed pregnancy:] How many months or weeks had you been pregnant when (the baby was born / that pregnancy ended)?

    -Pregnancy conception date for the most recent pregnancy is defined by DATECON, a recode constructed from DATEND and PRGLNGTH for completed pregnancies and date of interview and PRGLNGTH for current pregnancies.

    [NUMERATOR and DENOMINATOR:]

    -Total number of pregnancies [PREGNUM recode based on the question below]

    (Including this pregnancy,) how many times have you been pregnant in your life?

    -Century Month for Pregnancy End Date (including live birth) [DATEND recode based on the question below]

    In what month and year (did this pregnancy end / was this baby born)?

    -Gestational length of pregnancy (in weeks) [PRGLNGTH recode, defined for both current and completed pregnancies]

    -For each pregnancy, a recode OUTCOME is defined to indicate pregnancy outcome as shown below:

    1. Live birth
    2. Induced Abortion
    3. Still birth
    4. Miscarriage
    5. Ectopic pregnancy
    6. Current pregnancy
Data Collection Frequency: 
Periodic
Methodology Notes: 

    A female is considered to have had a pregnancy within 18 months of a previous birth if she had at least 2 pregnancies and the 2nd most previous pregnancy ended in a live birth. The most recent pregnancy can be a current pregnancy.

    The interval between the most recent pregnancy and previous live birth is derived from the delivery date of the live birth and the date of conception for the most recent pregnancy’s conception.

Changes Between HP2010 and HP2020: 
The objective has been revised since Healthy People 2010 to be consistent with the recommendations from the research literature. The 2010 objective measured spacing between two consecutive births, however the research literature frames the recommendation in terms of spacing between a birth and the next pregnancy. To be consistent, the objective has been revised to focus on birth-to-pregnancy spacing.

Revision History

Any change to the objective text, baseline, target, target-setting method or data source since the Healthy People 2020 launch.

Description of Changes Since the Healthy People 2020 Launch: 
In 2012, the original baseline was revised from 35.3 to 33.1 due to a change in the baseline year from 2006-2008 to 2006-2010. The target was adjusted from 31.7 to 29.8 to reflect the revised baseline using the original target-setting method.