NlsyLinks (version 2.2.2)

SubjectDetails79: Dataset containing further details of the Gen1 and Gen2 subjects.

Description

These variables are useful to many types of analyses (not just behavior genetics), and are provided to save users time.

Format

A data frame with 24,181 observations on the following 12 variables.

• SubjectTag see the variable of the same name in Links79Pair

• ExtendedID see the variable of the same name in Links79Pair

• Generation Indicates if the subject is in generation 1 or 2.

• Gender Indicates if the subject is Male or Female.

• RaceCohort Indicates if the race cohort is Hispanic, Black or Nbnh (ie, Non-black, non-hispanic). This comes from the Gen1 variable R02147.00 and Gen2 variable C00053.00.

• SiblingCountInNls The number of the subject's siblings, including himself/herself (a singleton has a value of one). This considers only the siblings in the NLSY. For Gen1, this can exclude anyone outside the age range. For Gen2, this excludes anyone who doesn't share the same mother.

• BirthOrderInNls Indicates the subject's birth order among the NLSY siblings.

• SimilarAgeCount The number of children who were born within roughly 30 days of the subject's birthday, including the subject (for instance, even an only child will have a value of 1). For Gen2 subjects, this should reflect how many children the Gen1 mother gave birth to at the same time (1: singleton; 2: twins, 3: triplets). For Gen1 subjects, this is less certain, because the individual might have been living with a similarly-aged housemate, born to a different mother.

• HasMzPossibly Indicates if the subject might be a member of an MZ twin/triplet. This will be true if there is a sibling with a DOB within a month, and they are the same gender.

• IsMz Indicates if the subject has been identified as a member of an MZ twin/triplet.

• KidCountBio The number of biological children known to the NLSY (but not necessarily interviewed by the NLSY.

• KidCountInNls The number of children who belong to the NLSY. This is nonnull for only Gen1 subjects.

• Mob The subject's month of birth. The exact day is not available to the public. By default, we set their birthday to the 15th day of the month.

• LastSurveyYearCompleted The year of the most recently completed survey.

• AgeAtLastSurvey The subject's age at the most recently completed survey.

• IsDead ##This variable is not available yet## Indicates if the subject was alive for the last attempted survey.

• DeathDate ##This variable is not available yet## The subject's month of death. The exact day is not available to the public. By default, we set their birthday to the 15th day of the month.

Author

Will Beasley

See Also

Download CSV If you're using the NlsyLinks package in R, the dataset is automatically available. To use it in a different environment, download the csv, which is readable by all statistical software. links-metadata-2017-79.yml documents the dataset version information.

Examples

library(NlsyLinks) # Load the package into the current R session.

summary(SubjectDetails79)

oldPar <- par(mfrow = c(3, 2), mar = c(2, 2, 1, .5), tcl = 0, mgp = c(1, 0, 0))
hist(
  SubjectDetails79$SiblingCountInNls,
  main = "",
  breaks = seq(from = 0, to = max(SubjectDetails79$SiblingCountInNls, na.rm = TRUE), by = 1)
)
hist(
  SubjectDetails79$BirthOrderInNls,
  main   = "",
  breaks = seq(from = 0, to = max(SubjectDetails79$BirthOrderInNls, na.rm = TRUE), by = 1)
)
hist(
  SubjectDetails79$SimilarAgeCount,
  main   = "",
  breaks = seq(from = 0, to = max(SubjectDetails79$SimilarAgeCount, na.rm = TRUE), by = 1)
)
hist(
  SubjectDetails79$KidCountBio,
  main   = "",
  breaks = seq(from = 0, to = max(SubjectDetails79$KidCountBio, na.rm = TRUE), by = 1)
)
hist(
  SubjectDetails79$KidCountInNls,
  main   = "",
  breaks = seq(from = 0, to = max(SubjectDetails79$KidCountInNls, na.rm = TRUE), by = 1)
)
# hist(SubjectDetails79$Mob, main="",
#     breaks=seq.Date(
#       from=min(SubjectDetails79$Mob, na.rm=TRUE),
#       to=max(SubjectDetails79$Mob, na.rm=TRUE),
#       by="year")
# )
par(oldPar)