Key Statistics from the National Survey of Family Growth

 

N Listing

• Natural family planning
• Nonbiological children - See Adoption and nonbiological parenting
• Nonmarital childbearing - See Births (mothers) and Births (fathers)
• Nonvoluntary sexual intercourse
• Norplant^TM implant - See Implant contraceptives
• Number of children ever born - See Births (mothers) and Births (fathers)
• Number of sexual partners in the past 12 months
• Number of sexual partners in lifetime

 

Natural family planning

NOTE: In "Natural family planning or safe period by temperature or cervical mucus test," a woman checks her temperature or the consistency of her cervical mucus to determine her fertile days and abstains from intercourse on those fertile days.

Natural family planning use among women 15-44 years of age who have ever had intercourse, 2006-2008:

• Percent of women who have ever used natural family planning: 4.6%
• Percent of women currently using natural family planning: 0.1%

Source: Series 23, No. 29, Tables 1 and 4 [PDF - 1.5 MB]

 

Nonvoluntary sexual intercourse

Of females 18-24 years of age in 2006-2010 who have had sex before age 20, percent whose first intercourse was not voluntary: 7.6%

(Based on the question: "Would you say then that this first vaginal intercourse was voluntary or not voluntary, that is, did you choose to have sex of your own free will or not?")

Source: Special tabulation by NCHS

 

Number of sexual partners in the past 12 months

 

Percent of all women 15-44 years of age who have had four or more male partners in the last 12 months, 2006-2008: 2.9%

Source: NHSR No. 36, Table 1 [PDF - 836 KB]

Percent of all men 15-44 years of age who have had four or more female partners in the last 12 months, 2006-2008: 6.0%

Source: NHSR No. 36, Table 2 [PDF - 836 KB]

NOTE: Includes partners with whom respondent had any type of sexual contact (vaginal, oral, or anal sex)

 

Number of sexual partners in lifetime

 

Median number of female sexual partners in lifetime, for men 25-44 years of age, 2006-2008¹: 6.1

Percent of men 15-44 years of age who have had 15 or more female sexual partners, 2006-2010²: 21.6%

Sources:

¹ NHSR No. 36, Table 4 [PDF - 836 KB]
² Special tabulation by NCHS

Median number of male sexual partners in lifetime, for women 25-44 years of age, 2006-2008¹: 3.6

Percent of women 15-44 years of age who have had 15 or more male sexual partners, 2006-2010²: 9.0%

Sources:

¹ NHSR No. 36, Table 3 [PDF - 836 KB]

² Special tabulation by NCHS

NOTE: Includes partners with whom respondent had any type of sexual contact (vaginal, oral, or anal sex)