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... thepopulation.Thenumberofwomen
sherepresentsinthepopulationiscalled
hersamplingweight.Sampling
weightsmayvaryconsiderablyfromthis
averagevaluedependingonthe
respondentsrace,theresponseratefor
similarwomen,andotherfactors.As
withanysamplesurvey,theestimatesin
thisreportaresubjecttosampling
variability.SignicancetestsonNSFG
datashouldbedonetakingthesampling
designintoaccount.
Nonsamplingerrorswereminimized
bystringentquality-controlprocedures
thatincludedthoroughinterviewer
training,checkingtheconsistencyof
answersduringandaftertheinterview,
imputingmissingdata,andadjustingthe
samplingweightsfornonresponseand
undercoveragetomatchnationaltotals.
Estimatesofsamplingerrorsandother
statisticalaspectsofthesurveyare
describedinmoredetailinanother
separatereport(13).
Thisreportshowsndingsby
characteristicsofthewomaninterviewed,
includingherage,maritalstatus,
education,parity,householdincome
dividedbythepovertylevel,andraceand
Hispanicorigin.Ithasbeenshownthat
blackandHispanicwomenhavemarkedly
lowerlevelsofincome,education,and
accesstohealthcareandhealthinsurance,
thanwhitewomen(14).Theseandother
factors,ratherthanraceororiginperse,
probablyaccountfordifferencesinthe
behaviorsandoutcomesstudiedinthis
reportamongwhite,black,andHispanic
women(15).
TableBshowsafactorthatshould
beconsideredininterpretingtrendsin
pregnancy-relatedbehaviorintheUnited
States:thechangingagecompositionof
thereproductive-agepopulation.In
1982,therewere54.1millionwomenof
reproductiveageintheUnitedStates;in
1988,57.9million;andin1995,60.2
million(16).Thelargebabyboom
cohort,bornbetween1946and1964,
was1834yearsofagein1982,2442
yearsofagein1988,and3149years
ofagein1995.Theselargebirthcohorts
werepreceded(upto1945)and
followed(196580)bysmallercohorts.
Whiletheoverallnumberofwomen
1544yearsofageroseby6million,or
11percentbetween1982and1995,the
numberofteenagewomendroppedby
about6percent,thenumberofwomen
2024yearsofagedroppedby
15percent,andthenumberofwomen
2529droppedby6percent(tableB).In
contrast,thenumberofwomen3044
yearsofageincreasedsharplyfor
example,thenumberofwomen4044
yearsofageincreasedby59percent
between1982and1995.Also,women
3044yearsofageaccountedfor
54percentofwomen1544yearsofage
in1995comparedwith44percentin
1982.Thesedifferencesinage
compositionmayberelevantwhenever
timetrendsamongwomen1544years
ofagearebeingdiscussed.
Publicuselesbasedonthe1995
NSFGareavailableoncomputertape.
TheywillalsobeavailableonCompact
DiscRead-OnlyMemory(CD-ROM).
Questionsaboutthecostandavailability
ofthecomputertapesshouldbedirected
totheNationalTechnicalInformation
Service(NTIS),5285PortRoyalRoad,
Springeld,VA22161,703487-4650,
or1800-553-NTIS.Questionsregarding
theCD-ROMlesshouldbedirectedto
NCHSDataDisseminationBranchat
301436-8500.
Results
T
ables117containmeasuresof
pregnancyandbirthintheUnited
States.
ChildrenEverBornandTotal
BirthsExpected
In1995,women1544yearsof
ageintheUnitedStateshadhadan
averageof1.2birthsperwoman
(table1).Thiscompareswith1.2in
1988and1.3in1982(17).In1995,
women1544yearsofageexpectedto
nishtheirchildbearingwithan
averageof2.2childrenperwoman
(table1)comparedwith2.2in1988
and2.4in1982(17).
Theproportionwhoreportthatthey
haveneverbeenpregnantwasmarkedly
higherforcollegegraduatesthanfor
thosewhodidnotcompletehighschool
(table3).Thissamepatternbyeducation
isalsoseenwhendataforlivebirthsare
examined(tables45):about49percent
ofwomen2244yearsofagewhohad
graduatedfromcollegehadhadnolive
birthsasofthedateofinterview
comparedwithjust8percentofwomen
2244yearsofagewithoutahigh
schooldiploma(table4).Withinrace
andHispanicorigingroups,thepattern
wasthesame:collegegraduateshad
markedlyhigherpercentschildlessthan
womenwithlesseducation(table5).
Table6showsacomparison
betweenlivebirthsreportedinthe
NSFGandlivebirthsregisteredonbirth
certicatesintheyears199194.In
eachindividualcalendaryearandfor
thesumoftheyears199194,the
NSFGestimateofthenumberofbirths
isveryclosetothebirthcerticatetotal
anddiffersfromitbylessthanthe
NSFGssamplingerror.TheNSFG
estimateisalsoverycloseforwhite
women.TheNSFGestimateforblack
womenisslightlylower,andthe
estimateforotherracessomewhat
higherthanthebirthcerticatedata.A
discussionofthisdifferenceisgivenin
thedenitionofRaceandHispanic
originintheDenitionsofTerms.
Overall,andbycharacteristicsother
thanrace,however,table6showsthat
TableB.Numberofwomen,byage:UnitedStates,1982,1988,and1995
Ageơ ... thepopulation.Thenumberofwomen
sherepresentsinthepopulationiscalled
hersamplingweight.Sampling
weightsmayvaryconsiderablyfromthis
averagevaluedependingonthe
respondentsrace,theresponseratefor
similarwomen,andotherfactors.As
withanysamplesurvey,theestimatesin
thisreportaresubjecttosampling
variability.SignicancetestsonNSFG
datashouldbedonetakingthesampling
designintoaccount.
Nonsamplingerrorswereminimized
bystringentquality-controlprocedures
thatincludedthoroughinterviewer
training,checkingtheconsistencyof
answersduringandaftertheinterview,
imputingmissingdata,andadjustingthe
samplingweightsfornonresponseand
undercoveragetomatchnationaltotals.
Estimatesofsamplingerrorsandother
statisticalaspectsofthesurveyare
describedinmoredetailinanother
separatereport(13).
Thisreportshowsndingsby
characteristicsofthewomaninterviewed,
includingherage,maritalstatus,
education,parity,householdincome
dividedbythepovertylevel,andraceand
Hispanicorigin.Ithasbeenshownthat
blackandHispanicwomenhavemarkedly
lowerlevelsofincome,education,and
accesstohealthcareandhealthinsurance,
thanwhitewomen(14).Theseandother
factors,ratherthanraceororiginperse,
probablyaccountfordifferencesinthe
behaviorsandoutcomesstudiedinthis
reportamongwhite,black,andHispanic
women(15).
TableBshowsafactorthatshould
beconsideredininterpretingtrendsin
pregnancy-relatedbehaviorintheUnited
States:thechangingagecompositionof
thereproductive-agepopulation.In
1982,therewere54.1millionwomenof
reproductiveageintheUnitedStates;in
1988,57.9million;andin1995,60.2
million(16).Thelargebabyboom
cohort,bornbetween1946and1964,
was1834yearsofagein1982,2442
yearsofagein1988,and3149years
ofagein1995.Theselargebirthcohorts
werepreceded(upto1945)and
followed(196580)bysmallercohorts.
Whiletheoverallnumberofwomen
1544yearsofageroseby6million,or
11percentbetween1982and1995,the
numberofteenagewomendroppedby
about6percent,thenumberofwomen
2024yearsofagedroppedby
15percent,andthenumberofwomen
2529droppedby6percent(tableB).In
contrast,thenumberofwomen3044
yearsofageincreasedsharplyfor
example,thenumberofwomen4044
yearsofageincreasedby59percent
between1982and1995.Also,women
3044yearsofageaccountedfor
54percentofwomen1544yearsofage
in1995comparedwith44percentin
1982.Thesedifferencesinage
compositionmayberelevantwhenever
timetrendsamongwomen1544years
ofagearebeingdiscussed.
Publicuselesbasedonthe1995
NSFGareavailableoncomputertape.
TheywillalsobeavailableonCompact
DiscRead-OnlyMemory(CD-ROM).
Questionsaboutthecostandavailability
ofthecomputertapesshouldbedirected
totheNationalTechnicalInformation
Service(NTIS),5285PortRoyalRoad,
Springeld,VA22161,703487-4650,
or1800-553-NTIS.Questionsregarding
theCD-ROMlesshouldbedirectedto
NCHSDataDisseminationBranchat
301436-8500.
Results
T
ables117containmeasuresof
pregnancyandbirthintheUnited
States.
ChildrenEverBornandTotal
BirthsExpected
In1995,women1544yearsof
ageintheUnitedStateshadhadan
averageof1.2birthsperwoman
(table1).Thiscompareswith1.2in
1988and1.3in1982(17).In1995,
women1544yearsofageexpectedto
nishtheirchildbearingwithan
averageof2.2childrenperwoman
(table1)comparedwith2.2in1988
and2.4in1982(17).
Theproportionwhoreportthatthey
haveneverbeenpregnantwasmarkedly
higherforcollegegraduatesthanfor
thosewhodidnotcompletehighschool
(table3).Thissamepatternbyeducation
isalsoseenwhendataforlivebirthsare
examined(tables45):about49percent
ofwomen2244yearsofagewhohad
graduatedfromcollegehadhadnolive
birthsasofthedateofinterview
comparedwithjust8percentofwomen
2244yearsofagewithoutahigh
schooldiploma(table4).Withinrace
andHispanicorigingroups,thepattern
wasthesame:collegegraduateshad
markedlyhigherpercentschildlessthan
womenwithlesseducation(table5).
Table6showsacomparison
betweenlivebirthsreportedinthe
NSFGandlivebirthsregisteredonbirth
certicatesintheyears199194.In
eachindividualcalendaryearandfor
thesumoftheyears199194,the
NSFGestimateofthenumberofbirths
isveryclosetothebirthcerticatetotal
anddiffersfromitbylessthanthe
NSFGssamplingerror.TheNSFG
estimateisalsoverycloseforwhite
women.TheNSFGestimateforblack
womenisslightlylower,andthe
estimateforotherracessomewhat
higherthanthebirthcerticatedata.A
discussionofthisdifferenceisgivenin
thedenitionofRaceandHispanic
originintheDenitionsofTerms.
Overall,andbycharacteristicsother
thanrace,however,table6showsthat
TableB.Numberofwomen,byage:UnitedStates,1982,1988,and1995
Ageơ ... 1982and1995,andsurgicallysterilized
womenrarelyusefamilyplanning
servicesaftertheiroperations.These
trends,alongwiththepotentialeffects
ofchangesinquestionwordingin1995,
deservefurtherdetailedstudy.
Inthe12monthsbeforethe1995
interview,33percentreceivedbirth
control/familyplanningservices;
27percentreceivedabirthcontrol
method,15percentbirthcontrol
counseling,and22percentacheckupor
testrelatedtobirthcontrol(table73).
About62percentofwomen
reportedreceivingaPapsmearand
61percentreceivedapelvicexaminthe
last12months.Thisissimilarto
findingsin1988(32).Thepercents
receivingotherservicesweremuch
lower:16percentreceivedapregnancy
test,17percentanHIVtest,8percent
othersexuallytransmitteddisease(STD)
testsortreatment,and21percentatest
ortreatmentforaninfection(table74).
About34millionwomenreceived
familyplanningorrelatedreproductive
healthservicesfromprivatedoctorsor
healthmaintenanceorganizations
(HMO)in1995.About15million
women,includingsomeofthesame
women,receivedtheseservicesfrom
othersources—forexample,public
familyplanningclinics,otherclinics,
andhospitals.Womenwhousedthese
othersourcestendedtohavelower
incomes.Forexample,only15percent
ofwomen22–44yearsofagewhoused
aprivatedoctororHMOhadincome
lessthan150percentofthepoverty
levelcomparedwith46percentofthose
whousedpublicfamilyplanning
clinics—athreefolddifference(table80).
CigaretteSmoking
About28percentofwomen15–44
yearsofagewerecurrentcigarette
smokersin1995,and14percentwere
formersmokers(table84).These
findingsaresimilartothosefromthe
NHIS(31).Theproportionwho
currentlysmokewasnearlyfourtimes
ashighamongwomenwithlessthana
highschooleducation(47percent)as
amongcollegegraduates(12percent)
(table84).About18percentofpregnant
orpostpartumwomenwerecurrently
smokingin1995.About24percentof
the10millionusersoforal
contraceptiveswerecurrentlysmoking,
and10percentweresmoking15or
morecigarettesperday.Almost
18percentofteenagewomenwere
currentlysmokingin1995(table84).
HumanImmunodeficiency
VirusTestingandRelated
Behavior
Thehumanimmunodeficiencyvirus
(HIV),thevirusthatcausesacquired
immunodeficiencysyndrome(AIDS),
wasthesubjectofseveralquestionsin
the1995NSFG.About48percentof
women15–44yearsofagehavehadan
HIVtestatsometimeintheirlives,
eitheraspartofblooddonationor
unrelatedtoit.Thosemostlikelyto
haveeverbeentestedforHIVwere
women20–34yearsofage
(54–60percent)andthosewithan
educationbeyondhighschool
(55–56percent)(table85).Ofthe11.4
millionwomentestedforHIVinthe12
monthsbeforethe1995survey,the
reasoncitedmostoftenwastofindout
ifshewasinfected(40percent);
23percentweretestedinconnection
withprenatalcare.Hospitalizationor
surgery,applyingforinsurance,and
doctor’sreferralwereeachcitedby
7–8percentofrecentlytestedwomen
(table86).
Intheself-administeredpartofthe
NSFGinterview(AudioCASI),
28percentofunmarriedwomenreported
thattheirmalepartner(s)inthelast12
months‘‘werehavingsexwithother
women’’aroundthesametime.Women
withmorepartnersinthelast12months
weremorelikelytoreportthattheir
malepartners(s)werealsohaving
intercoursewithotherwomen—
15percentofthosewithonepartner
comparedwith57percentofthosewith
threeormorepartners(table87).
Amongunmarriedwomen15–44
yearsofagewhohavehadintercourse
inthepastyearandwhoreportedthat
theyhaveeverusedcondomsfor
diseasepreventionatsometimeintheir
lives,aboutone-thirdreportedthattheir
partnersinthepastyearusedcondoms
fordiseasepreventioneverytimethey
hadintercourse,one-thirdsaidtheyused
condomssometimesbutnoteverytime,
andone-thirdsaidnotatall.Among
unmarriedwomenwithtwoormore
partnersinthepastyear,15percentdid
notusecondomsatallinthepastyear
fordiseasepreventionand19percent
usedthemlessthanhalfthetime;some
ofthesewomenmayhaveused
condomssolelyforcontraception.
Furtherresearchisneededonthesedata
todeterminetheextenttowhich
unprotectedintercourseoccurredandin
whichgroupsofthepopulation
(table88,alsoseeDefinitionsofTerms).
PelvicInflammatoryDisease
andDouching
Pelvicinflammatorydisease,or
PID,iscausedbyavarietyofinfectious
agents.PIDcancauserecurrentpain,
ectopicpregnancy,andcanleadto
infertilityifleftuntreatedorrecurrent
(33).In1995,8percentofwomen
reportedthattheyhadbeentreatedfor
PIDatsometimeintheirlives—
8percentofHispanicwomen,7percent
ofNon-Hispanicwhitewomen,and
11percentofblackwomen.PIDwas
twiceascommonamongwomenwho
doucheregularly(12percent)compared
withwomenwhodonotdouche
(6percent).PIDwasalsotwiceas
commonamongthosewith10ormore
sexualpartnersintheirlifetimes
(14percent)asamongwomenwith2–3
partners(7percent)(table89).These
findingsaresimilartothoseinthe1982
and1988NSFG,butitappearsthatthe
prevalenceofPIDhasdeclined,from
14percentin1982to11percentin1988
and8percentin1995(34).
Douchinghasbeenassociatedwith
PID,ectopicpregnancy,infertility,and
cervicalcancer(35).In1988,37percent
ofwomen15–44yearsofagereported
thattheyweredouchingregularly.In
1995,thisproportionhaddeclinedto
27percent.However,douchingwasstill
morecommonthanaverageamong
Hispanicwomen(34percent),black
women(55percent),womenwhodid
notfinishhighschool(53percent),and
thosewhohavehadPID(41percent).
Blackcollegegraduateswerefourtimes
aslikelytodoucheregularlyaswhite
collegegraduates(40percentversus
9percent)(table90).
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