IPUMS NHIS: descr: IMRPOLMO4

IPUMS NHIS

NATIONAL HEALTH INTERVIEW SURVEY

Select samples

IMRPOLMO4

Record date of fourth polio vaccine: Month

Codes and Frequencies

Category availability view
Case-count view

An 'X' indicates the category is available for that sample

Code	Label	03	02	01	00	99	98	97	96	95	94	93	92	91
00	NIU	X	X	X	X	X	X	X	X	X	X	X	X	X
01	January	X	X	X	X	X	X	X	X	X	X	X	X	X
02	February	X	X	X	X	X	X	X	X	X	X	X	X	X
03	March	X	X	X	X	X	X	X	X	X	X	X	X	X
04	April	X	X	X	X	X	X	X	X	X	X	X	X	X
05	May	X	X	X	X	X	X	X	X	X	X	X	X	X
06	June	X	X	X	X	X	X	X	X	X	X	X	X	X
07	July	X	X	X	X	X	X	X	X	X	X	X	X	X
08	August	X	X	X	X	X	X	X	X	X	X	X	X	X
09	September	X	X	X	X	X	X	X	X	X	X	X	X	X
10	October	X	X	X	X	X	X	X	X	X	X	X	X	X
11	November	X	X	X	X	X	X	X	X	X	X	X	X	X
12	December	X	X	X	X	X	X	X	X	X	X	X	X	X
97	Unknown-refused	·	·	X	X	·	X	·	·	·	·	·	·	·
98	Unknown-not ascertained	·	·	·	·	·	X	·	·	·	·	·	·	·
99	Unknown-don't know	X	X	X	X	X	X	X	X	X	X	X	X	X

1991-1993: Sample persons under age 6 with any information transcribed from a shot record and with at least 4 polio vaccinations on record.
1994-1996: Sample persons under age 6, and all children 19 to 35 months old, with any information transcribed from a shot record and with at least 4 polio vaccinations on record.
1997: Sample children under age 7, and all children 19 to 35 months old in quarters 1 and 2 and 12 to 35 months old in quarters 3 and 4, with any information transcribed from a shot record and with at least 4 polio vaccinations on record.
1998-2002: Sample children under age 7, and all children 12 to 35 months old, with any information transcribed from a shot record and with at least 4 polio vaccinations on record.
2003: Sample children under age 7 with any information transcribed from a shot record and with at least 4 polio vaccinations on record.