Dataset from Baystate Medical Center in Springfield, Massachusetts (Hosmer et. al. 1998) low: indicator of birth weight less than 2.5 kg. age: mother's age in years. lwt: mother's weight in pounds at last menstrual period. race: mother's race (1 = white, 2 = black, 3 = other). smoke: smoking status during pregnancy. ptl: number of previous premature labours. ht: history of hypertension. ui: presence of uterine irritability. ftv: number of physician visits during the first trimester. bwt: birth weight in grams.
data(df_opt_birthwt)csv
HOSMER, D.W., HOSMER, T., LE CESSIE, S. and LEMESHOW, S. (1997), A COMPARISON OF GOODNESS‐OF‐FIT TESTS FOR THE LOGISTIC REGRESSION MODEL. Statist. Med., 16: 965-980. doi:10.1002/(SICI)1097-0258(19970515)16:9<965::AID-SIM509>3.0.CO;2-O
data(df_opt_birthwt)
head(df_opt_birthwt, 10)
#> Index low age lwt race smoke ptl ht ui ftv bwt
#> 1 85 0 19 182 2 0 0 0 1 0 2523
#> 2 86 0 33 155 3 0 0 0 0 3 2551
#> 3 87 0 20 105 1 1 0 0 0 1 2557
#> 4 88 0 21 108 1 1 0 0 1 2 2594
#> 5 89 0 18 107 1 1 0 0 1 0 2600
#> 6 91 0 21 124 3 0 0 0 0 0 2622
#> 7 92 0 22 118 1 0 0 0 0 1 2637
#> 8 93 0 17 103 3 0 0 0 0 1 2637
#> 9 94 0 29 123 1 1 0 0 0 1 2663
#> 10 95 0 26 113 1 1 0 0 0 0 2665