Format/length:	n3
HES item:
National Codes:
Default Codes:

ESTIMATED PACK YEARS is the estimated number of pack years of smoking. This is the average number of cigarettes smoked per day divided by 20 (a pack) multiplied by the number of years smoked. This is calculated from the CIGARETTES PER DAY and NUMBER OF YEARS SMOKED.

For example: 20 cigarettes smoked per day for 20 years equals 20 pack years and 10 cigarettes per day for 20 years equals 10 pack years.

References:
National Cancer Dataset Version 1.3_ISB October 2002

 

This data element is also known by these names:

Context	Alias
plural	ESTIMATED PACK YEARS