c_lungsmhr

how many hours ago did you last smoke? nurse: code the number of hours.

Value label	Value	Absolute frequency	Relative frequency
inapplicable	-8	4379.00	86.66%
[Value GT 0]	1	674.00	13.34%
	Total	5053.00	100.00%

Value label	Value	Absolute frequency	Relative frequency
2.298	4379	0	24%

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The Economic and Social Research Council is the primary funder of the study
The Study is led by a team at the Institute for Social and Economic Research (ISER) at the University of Essex.