Key Statistics from the National Survey of Family Growth - B Listing

• Birth control – See Contraception
• Births (mothers)
  • Age at first birth
  • Marital or cohabiting status of mother at time of birth
  • Number of children ever born (parity)
  • Premarital/nonmarital status of births
  • Attitudes about childbearing – See Attitudes: Parenthood and childbearing
• Births (fathers)
  • Age at first birth fathered
  • Marital or cohabiting status of father at time of birth
  • Number of biological children ever fathered
  • Attitudes about childbearing – See Attitudes: Parenthood and childbearing
• Birth expectations
• Breast-feeding
  • Initiation of breast-feeding
  • Duration of breast-feeding

 

Births (mothers)

 

Age at first birth

	20021	2006-20102	2011-20152
Mean age at first birth for women 15-44 years of age who ever had a liveborn child	22.9	23.0	23.1 (0.16)

Sources:

¹NHSR No. 51, Table 7 [PDF – 543 KB]

²Special tabulation by NCHS

 

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Marital or cohabiting status of mother at time of birth

 

Percent distribution by marital or cohabiting status of women 15-44 years of age when their first child was born:

	20021	2006-20102	2011-20152
Married	62.3%	54.4%	50.1% (1.29)
Cohabiting	12.4%	21.9%	25.8% (0.96)
Unmarried and not cohabiting	25.3%	23.6%	24.1% (0.88)

Sources:

¹NHSR No. 51, Table 11 [PDF 543 KB]

²Special tabulation by NCHS

 

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Percent distribution by marital or cohabiting status at birth for births occurring in the 5 years before interview to women 15-44 years of age:

	20021	2006-20101	2011-20152
Married	64.4%	59.7%	61.2% (1.54)
Cohabiting	14.3%	23.4%	26.2% (1.17)
Unmarried and not cohabiting	21.3%	16.9%	12.6% (0.78)

Sources:

¹ NHSR No. 51, Table 12 [PDF – 543 KB]

²Special tabulation by NCHS

 

Number of children ever born (parity)

Percent distribution of women 40-44 years of age by number of children ever born:

	20021	2006-20101	2011-20152
No children	15.0%	15.4%	15.0% (1.21)
One child	18.0%	15.2%	16.8% (1.35)
Two children	31.6%	35.0%	33.7% (1.78)
Three children	20.7%	20.2%	22.0% (1.54)
Four or more children	14.4%	14.2%	12.6% (1.24)

Sources:

¹NHSR No. 51, Table 3 [PDF – 543 KB]

²Special tabulation by NCHS

 

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Premarital/nonmarital status of births

	20021	2006-20101	2011-20152
Percentage of mothers (women 15-44 years of age who ever had a birth) that have ever had a nonmarital birth	42.2%	49.3%	54.0% (1.24)

Sources:

¹NHSR No. 51, Table 13 [PDF – 543 KB]

²Special tabulation by NCHS

 

Births (fathers)

 

Age at first birth fathered

	20021	2006-20101	2011-20152
Mean age at the birth of their first biological child for men 15-44 years of age who ever fathered a biological child	25.1	25.1	25.5 (0.16)

Sources:

¹NHSR No. 51, Table 7 [PDF – 543 KB]

²Special tabulation by NCHS

 

Marital or cohabiting status of father at time of birth

 

Marital or cohabiting status of father when his first child was born for men 15-44 years of age (who had ever fathered a child):

	20021	2006-20101	2011-20152
Currently or formerly married to the child’s mother	66.2%	58.6%	57.2% (1.43)
Cohabiting with the child’s mother	18.2%	25.4%	26.4% (1.09)
Unmarried and not cohabiting with the child’s mother	15.6%	16.0%	16.4% (0.90)

Sources:

¹NHSR No. 51, Table 11 [PDF – 543 KB]

²Special tabulation by NCHS

 

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Number of biological children ever fathered

Percent distribution of men 40-44 years of age by number of children ever fathered:

	20021	2006-20102	2011-20153
No children	22.4%	23.6%	19.6% (1.48)
One child	19.9%	18.2%	20.2% (1.44)
Two children	25.0%	31.2%	30.9% (1.89)
Three or more children	32.7%	26.9%	29.3% (1.64)

Sources:

¹Series 23, No 26, Table 4 [PDF – 3.3 MB]

²NHSR No. 51. Table 4 [PDF – 543 KB]

³Special tabulation by NCHS

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Birth expectations

Average number of children expected by men and women in their lifetimes

	20021	2006-20101	2011-20152
Women 15-44 years of age	2.3	2.3	2.3 (0.02)
Men 15-44 years of age	2.2	2.2	2.2 (0.03)

Sources:

¹NHSR No. 51, Table 5 [PDF -543 KB]

²Special tabulation by NCHS

 

Percent distribution of women 15-44 years of age by expected number of births in their lifetimes:

Percent of women who expect:	20021	2006-20101	2011-20152
No births	8.9%	8.3%	9.5% (0.47)
1 birth	13.4%	12.5%	12.5% (0.45)
2 births	42.1%	40.9%	41.3% (0.81)
3 births	22.1%	24.0%	23.3% (0.63)
4 or more births	13.5%	14.3%	13.3% ( 0.65)

Sources:

¹NHSR No. 51, Table 6 [PDF – 543 KB]

²Special tabulation by NCHS

 

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Breast-feeding

 

Initiation of breast-feeding

	Singleton babies born in 2008-2010	Singleton babies born in 2011-2013
Percent who were breast-fed at all	73.1% (1.54)	78.6% (1.84)

Source: Special tabulation by NCHS based on 2011-2015 NSFG for Health US 2017 report.

 

Duration of breast-feeding

	Singleton babies born 2008-2010	Singleton babies born 2011-2013
Percent who were breast-fed 3 months or more	50.2% (1.84)	56.6% (2.01)

 

Source: Special tabulation by NCHS based on 2011-2015 NSFG for Health US 2017 report

 

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