Codes and Frequencies
For sample persons under 5 years old, ROLLOVEREV reports if the child has ever rolled over on his or her own on purpose.
Child motor and social development variables should be combined with AGE, BIRTHMO (Month of birth), and INTERVWMO (Month of NHIS interview) to provide complete information about the child's developmental progress. For more information on how the child's specific age is relevant to this variable, please see HEADTURNEV.
For related variables, please use the IPUMS NHIS search function and drop-down menus.
- 1981: Sample persons under age 5.
- 1981 : SAMPWEIGHT