Description

LUNGMISYRC indicates whether the person had a chronic missing lung in the past year. This variable is created with supplemental programming by the IPUMS NHIS staff from the pre-1997 condition records. For general information about IHIS variables (such as LUNGMISYRC) created from the pre-1997 condition records, see the User Note on Condition Records and Condition Variables.

Defining Missing Lung Records and Identifying Persons with a Missing Lung

For all available years, persons who were asked a direct question about having a missing lung and who have a chronic missing lung condition record are given a "Yes" code for LUNGMISYRC. Persons who were asked a direct question about having a missing lung but do not have a chronic missing lung record are given a code of "No." Persons who were not asked a direct question about a missing lung, or for whom it is unknown whether they were asked such a question, are given a code of "NIU" (not in universe), regardless of whether they have a chronic missing lung record.

For all available years (1984 to 1996), chronic missing lung records were defined as those condition records with a code of "214" ("Absence, lung") in the variable C1CONDRC in the original NHIS public use files. This condition code value comes from NCHS's Diagnostic Recode C: Chronic Conditions and Impairments.

Weights
For all available years (1984-1996), LUNGMISYRC should be weighted with CONDWT6.

Comparability

There are no comparability issues with LUNGMISYRC.

Universe

Availability

• 1984-1996

Weights

• 1984-1996 : CONDWT6