b_htfevfvc

fev1/fvc ratio (based on highest technically satisfactory values)

Value label	Value	Absolute frequency	Relative frequency
inapplicable	-8	2659.00	16.99%
[Value GT 0]	1	12987.00	83.01%
	Total	15646.00	100.00%

Value label	Value	Absolute frequency	Relative frequency
0.762	2659	0.22	1%

What else is Understanding Society doing?

Photo of family walking their dog in the countryside

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Calendar Year 2023 data now available

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22 Oct 2025

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ESRC Institute for Social and Economic Research University of Essex

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.