# install.packages("devtools")
devtools::install_github("jjchern/mmdata")

library(mmdata)
ls("package:mmdata", all = TRUE)
#>  [1] "banks"                   "child_labor_law"        
#>  [3] "dd_mlda"                 "hs_diploma"             
#>  [5] "mdve"                    "nhis2009"               
#>  [7] "qob"                     "rand_hie_annual_spend"  
#>  [9] "rand_hie_initial_sample" "rand_hie_person_years"  
#> [11] "rd_mlda"                 "twins"

library(tibble)
mmdata::qob
#> Source: local data frame [329,509 x 5]
#> 
#>         lnw     s   yob   qob   sob
#>       <dbl> <dbl> <dbl> <dbl> <dbl>
#> 1  5.790019    12    30     1    45
#> 2  5.952494    11    30     1    45
#> 3  5.315949    12    30     1    45
#> 4  5.595926    12    30     1    45
#> 5  6.068915    12    30     1    37
#> 6  5.793871    11    30     1    45
#> 7  6.389161    11    30     1    36
#> 8  6.047781    12    30     1    51
#> 9  5.354861    11    30     1    45
#> 10 5.259597     7    30     1    45
#> ..      ...   ...   ...   ...   ...