National Longitudinal Study of Adolescent to Adult Health, Public Use Pregnancy Data, Wave IV

Data Archive > U.S. Surveys > General Population > National > Add Health Surveys > Codebook


All frequencies are raw numbers (no weights used).
1) [Wave IV Section 18: Pregnancy Table] Respondent Identifier (AID)
NMeanStd.Deviation
TOTAL708194153836.4616531098
2) This section is administered to respondents who reported a pregnancy in Section 16. Pregnancy questions are asked for all relationships listed in Section 16 that show a pregnancy. The response to Section 16B Q.18 (H4TR18) (total number of pregnancies reported with a particular partner) determines the number of pregnancy records generated for each relationship. Thus, for each partner, [fill Section 16B Q.18 (H4TR18] pregnancy observations are generated to indicate the first to the [fill Section 16B Q.18 (H4TR18] pregnancy with that partner. The pregnancy number is saved in constructed variable PRGNO. Partner Identifier. (PTNR_ID)
TOTAL%
1) 488469.0
2) 136919.3
3) 4786.8
4) 1752.5
5) 921.3
6) 360.5
7) 120.2
8) 110.2
9) 120.2
10) 60.1
11) 40.1
12) 10.0
16) 10.0
TOTAL7081100.0
3) Pregnancy Number within Relationship (PRGNO)
TOTAL%
1) 433161.2
2) 177225.0
3) 6389.0
4) 2213.1
5) 701.0
6) 250.4
7) 80.1
8) 60.1
9) 20.0
10) 20.0
11) 20.0
12) 20.0
13) 10.0
14) 10.0
TOTAL7081100.0
4) The following statement appears above each question (H4PG1-H4PG15) as respondent answers detailed questions for each pregnancy. This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. How did this pregnancy end? (H4PG1)
TOTAL%
1) Abortion100414.2
2) Ectopic or tubal pregnancy650.9
3) Miscarriage93513.2
4) Stillbirth610.9
5) Live birth by Cesarean section110315.6
6) Live birth by vaginal delivery353950.0
7) Pregnancy has not ended (currently pregnant)2954.2
96) Refused490.7
98) Don't know300.4
TOTAL7081100.0
5) [If H4PG1=7 ask H4PG2Y, else skip to H4PG3Y.] This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. What is the expected due date (year)? (H4PG2Y)
TOTAL%
2007) 200740.1
2008) 20082473.5
2009) 2009390.6
9994) 1995 and before20.0
9997) Legitimate skip678695.8
9998) Don't know30.0
TOTAL7081100.0
6) [If H4PG1=7 skip to H4PG7.] This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. In what year did this pregnancy end (year)? (H4PG3Y)
TOTAL%
1990) 199020.0
1991) 199160.1
1992) 199270.1
1993) 1993260.4
1994) 1994721.0
1995) 19951331.9
1996) 19961912.7
1997) 19972693.8
1998) 19983595.1
1999) 19994286.0
2000) 20004736.7
2001) 20015537.8
2002) 20025397.6
2003) 20035768.1
2004) 20045577.9
2005) 20056128.6
2006) 20066429.1
2007) 20076559.3
2008) 20082743.9
9996) Refused781.1
9997) Legitimate skip2954.2
9998) Don't know3344.7
TOTAL7081100.0
7) [If H4PG1=5,6,96,98 ask H4PG5, else skip to H4PG7.] This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. With this pregnancy, how many babies were born alive? Please include babies who died shortly after birth and babies who were placed for adoption. (H4PG5)
TOTAL%
1) 1446263.0
2) 21271.8
3) 3220.3
4) 490.1
5) 520.0
96) Refused580.8
97) Legitimate skip236033.3
98) Don't know410.6
TOTAL7081100.0
8) [If H4PG5 is greater than 1 ask H4PG6, else skip to H4PG7.] This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. Were the babies fraternal or identical? (H4PG6)
TOTAL%
1) Fraternal1171.7
2) Identical260.4
6) Refused60.1
7) Legitimate skip692197.7
8) Don't know110.2
TOTAL7081100.0
9) This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. In the month before you [got pregnant/go (initials) pregnant) were you or (initials)] using any kind of birth control, including condoms? (H4PG7)
TOTAL%
0) No512672.4
1) Yes184026.0
2) Pregnancy result of artificial insemination/sperm donor110.2
6) Refused520.7
8) Don't know520.7
TOTAL7081100.0
10) [If H4PG7=2 skip to checkpoint for H4PG9, else ask H4PG8.] This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. Thinking back to the time just before this pregnancy with (initials), did you want to have a child then? (H4PG8)
TOTAL%
0) No332046.9
1) Yes365351.6
6) Refused490.7
7) Legitimate skip110.2
8) Don't know480.7
TOTAL7081100.0
11) [If Section 16b Q.13 (H4TR13)=1 ask H4PG9, else if Section 16b Q.13 (H4TR13)=2 ask H4PG10. Else if Section 16b Q.13 (H4TR13)=3 ask H4PG11.] This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. Were you and (initials) married to each other at the time of (pregnancy/birth)? (H4PG9)
TOTAL%
0) No94113.3
1) Yes279139.4
6) Refused120.2
7) Legitimate skip333047.0
8) Don't know70.1
TOTAL7081100.0
12) [If H4PG9=0,6,8 ask H4PG10, else skip to checkpoint for H4PG12.] This question refers to your (fill (pregnancy/number reported pregnancy) with (initials). Were you and (initials) living together at that time? (H4PG10)
TOTAL%
0) No101014.3
1) Yes208329.4
6) Refused290.4
7) Legitimate skip393155.5
8) Don't know280.4
TOTAL7081100.0
13) [If H4PG10=0,6,8 ask H4PG11, else skip to checkpoint for H4PG12.] This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. Which of the following statements best describes your relationship with (initials) at the time of (pregnancy/birth)? (H4PG11)
TOTAL%
1) We (do/did not) see or talk to each other1842.6
2) We hardly ever (see/saw) or (talk/talked) to each other1692.4
3) We (are/were) just friends2663.8
4) We (are/were) involved in an on-again, off-again relationship4947.0
5) We (are/were) romantically involved on a steady basis101214.3
95) Not asked in pretest80.1
96) Refused450.6
97) Legitimate skip487468.8
98) Don't know290.4
TOTAL7081100.0
14) [If H4PG1=5,6,7 ask H4PG12, else if H4PG1=1, 2, 3, 4, 96, or 98, skip to next pregnancy reported by respondent. If there are no other pregnancies reported, go to Section 19 Q.1 (H4LB1).] This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. During this pregnancy with (initials) did (you/(initials)) ever visit a doctor, nurse-midwife or other health care provider for prenatal care, that is, for one or more pregnancy check-ups? (H4PG12)
TOTAL%
0) No1402.0
1) Yes477567.4
6) Refused70.1
7) Legitimate skip214430.3
8) Don't know150.2
TOTAL7081100.0
15) [If BIO_SEX4=1, skip to next pregnancy reported by respondent. If there are no other pregnancies reported, go to Section 19 Q.1 (H4LB1). If BIO_SEX4=2 and H4PG12=1, ask H4PG13, else go to checkpoint for H4PG14.] This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. How many weeks pregnant were you at the time of your first prenatal care visit? (H4PG13)
TOTAL%
1) 1410.6
2) 21121.6
3) 31742.5
4) 45067.1
5) 52173.1
6) 66008.5
7) 71221.7
8) 84876.9
9) 9761.1
10) 10971.4
11) 11290.4
12) 122403.4
13) 13170.2
14) 14190.3
15) 15180.3
16) 16330.5
17) 1730.0
18) 18130.2
19) 1950.1
20) 20340.5
21) 2140.1
22) 2240.1
23) 2330.0
24) 24150.2
25) 2550.1
26) 2620.0
27) 2710.0
28) 28130.2
29) 2910.0
30) 3050.1
31) 3110.0
32) 3260.1
33) 3320.0
34) 3460.1
35) 3540.1
36) 3640.1
37) 3730.0
38) 38190.3
39) 3970.1
40) 40220.3
41) 4110.0
42) 4260.1
96) Refused80.1
97) Legitimate skip404957.2
98) Don't know470.7
TOTAL7081100.0
16) [If H4PG1=5,6, ask H4PG14, else skip to next pregnancy reported by respondent. If there are no other pregnancies reported, go to Section 19 Q.1 (H4LB1).] This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. During this pregnancy with (initials) how many cigarettes did you smoke? (H4PG14)
TOTAL%
0) None234633.1
1) A few cigarettes, but not every week1412.0
2) A few cigarettes a week, but not every day1432.0
3) 10 or fewer a day2103.0
4) 11 to 20 a day921.3
5) 21 to 30 a day60.1
6) 31 or more a day50.1
96) Refused30.0
97) Legitimate skip413158.3
98) Don't know40.1
TOTAL7081100.0
17) This question refers to your [fill (pregnancy/number reported pregnancy) with (initials)]. During this pregnancy with (initials), how often did you drink alcoholic beverages? (H4PG15)
TOTAL%
0) Never281239.7
1) Once a month or less1041.5
2) Two or three days a month190.3
3) One or two days a week110.2
6) Refused10.0
7) Legitimate skip413158.3
8) Don't know30.0
TOTAL7081100.0