Natality_2014_100k: Medical info on each birth in the US in 2014

In dtkaplan/natality2014: Data from the CDC on births in the US in 2014

Description

The Centers for Disease Control collects data on all births registered in the US (50 states + DC). The full data set, Natality_2014, contains entries for the full set of births keeping only a subset of variables related to potential risk factors and outcomes. Natality_2014_100k, Natality_2014_10k, Natality_2014_1k are random samples of size one-hundred thousand, ten thousand, and one thousand respectively and are provided automatically when the natality2014 package is attached. A larger sample of one-million cases, Natality_2014_1000k, and the complete set of cases in Natality_2014 are also provided by the package, but not through the usual data() interface. To access those large files, see the instructions given in Larger_natality_data_files.

Usage

Natality_2014_100k

Format

A data frame with a random sample of size 100000 from the complete CDC set of 3,998,175 cases, each of which is a birth in the US in 2014.

• mager Mother's age at date of birth

• fagecomb Father's age at date of birth

• ubfacil Type of facility where the birth took place

• urf_diab Mother had diabetes before pregnancy

• urf_chyper Mother had chronic hypertension before pregnancy

• urf_phyper Mother developed hypertension during pregnancy

• urf_eclam Mother developed eclampsia

• uop_induc Was labor induced?

• uld_breech Did baby present as breech? See me_pres.

• ilive Whether the baby was alive at the time of the report.

• ab_aven1 Baby put on mechanical ventilator immediately

• ab_aven6 Baby still on ventilator after 6 hours

• ab_nicu Baby transferred to intensive care unit.

• ab_surf Surfactant administered to newborn

• ab_anti Antibiotics administered to newborn

• ab_seiz Newborn had seizure

• dbwt Baby's weight (gm)

• combgest Length of gestation

• sex Baby's sex

• dplural Plurality of birth: 2 = twins, 3 = triplets, ...

• apgar5 APGAR score at 5 minutes

• apgar10 APGAR score at 10 minutes

• mtran Mother transferred. No other description given.

• pay Source of payment for delivery

• mm_mtr Mother received blood transfusion

• mm_plac Perineal laceraction

• mm_rupt Ruptured uterus

• mm_uhyst Unplanned hysterectomy

• mm_aicu Mother transferred to intensive care unit

• me_pres Presentation of baby on delivery. See uld_breech. It's not clear why "other" corresponds to breech.

• me_rout Method of delivery

• ld_indl Labor induced

• pwgt_r Mother's weight before pregnancy

• dwgt_r Mother's weight at delivery

• m_ht_in Mother's height

• cig_0 Number of cigarettes smoked daily before pregnancy

• cig_1 Number of cigarettes smoked daily during first trimester

• cig_2 Number of cigarettes smoked daily during second trimester

• cig_3 Number of cigarettes smoked daily during third trimester

• wic Enrolled in Women, Infants, and Children (WIC) program for supplemental nutrition.

• precare Month started in prenatal care. 15 means never started.

• previs Number of visits to prenatal care.

• priorlive Number of previous live births.

• priordead Number of previous births where baby died.

• priorterm Number of terminations of pregnancy before this birth.

Details

Variable names are the same as in the original CDC file.

Variables have been re-coded to translate markers like 99 into 'NA' and to self-document the levels of the variables.

Note that the data include only registered births. Fetal deaths are not included. For reference, there were about 24,000 fetal deaths (20 weeks and thereafter) in the US in 2013. (See http://www.cdc.gov/nchs/data/nvsr/nvsr64/nvsr64_08.pdf.) This corresponds to about 0.6 reports about 16,000 infant deaths before age 28 days and another 7500 deaths before age 1 year.

The smaller samples are nested in the larger ones. That is, all the cases in Natality_2014_10k are included in Natality_2014_1k, and so on. Larger data files are available by following the instructions in Larger_natality_data_files: Natality_2014 with 3.99 million cases and Natality_2014_1000k with a random sample of one million cases.

See Also

Larger_natality_data_files

Examples

table(Natality_2014_100k$ilive)
table(Natality_2014_10k$ilive) # from sample of 10,000
table(Natality_2014_1k$ilive) # from sample of 1000

dtkaplan/natality2014 documentation built on May 15, 2019, 5:22 p.m.