Description

For sample persons under age 18, OPNERVEV reports if the person has ever had an operation on the nervous system. This includes operations on the skull, brain, cerebral meninges, spinal cord and spinal canal structures, cranial and peripheral nerves, and sympathetic nerves or ganglia.

Comparability

This variable is completely comparable over time.

Universe

Availability

• 1981

Weights

• 1981 : SAMPWEIGHT