The Sashelp.BWeight data set provides 1997 birth weight data from National Center for Health Statistics (Koenker and Hallock 2001; Abreveya 2001). The data record live, singleton births to mothers between the ages of 18 and 45 in the United States who were classified as black or white. The following steps display information about the Sashelp.BWeight data set and create Figure 49:
title '1997 Birth Weight Data';
proc contents data=sashelp.BWeight varnum;
ods select position;
run;
title 'The First Five Observations Out of 50,000';
proc print data=sashelp.BWeight(obs=5);
run;
Figure 49: Birth Weight Data
| 1997 Birth Weight Data |
| Variables in Creation Order | ||||
|---|---|---|---|---|
| # | Variable | Type | Len | Label |
| 1 | Weight | Num | 8 | Infant Birth Weight |
| 2 | Black | Num | 8 | Black Mother |
| 3 | Married | Num | 8 | Married Mother |
| 4 | Boy | Num | 8 | Baby Boy |
| 5 | MomAge | Num | 8 | Mother's Age |
| 6 | MomSmoke | Num | 8 | Smoking Mother |
| 7 | CigsPerDay | Num | 8 | Cigarettes Per Day |
| 8 | MomWtGain | Num | 8 | Mother's Pregnancy Weight Gain |
| 9 | Visit | Num | 8 | Prenatal Visit |
| 10 | MomEdLevel | Num | 8 | Mother's Education Level |
| The First Five Observations Out of 50,000 |
| Obs | Weight | Black | Married | Boy | MomAge | MomSmoke | CigsPerDay | MomWtGain | Visit | MomEdLevel |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 4111 | 0 | 1 | 1 | -3 | 0 | 0 | -16 | 1 | 0 |
| 2 | 3997 | 0 | 1 | 0 | 1 | 0 | 0 | 2 | 3 | 2 |
| 3 | 3572 | 0 | 1 | 1 | 0 | 0 | 0 | -3 | 3 | 0 |
| 4 | 1956 | 0 | 1 | 1 | -1 | 0 | 0 | -5 | 3 | 2 |
| 5 | 3515 | 0 | 1 | 1 | -6 | 0 | 0 | -20 | 3 | 0 |