Compare	File	Name	Label
	F2	wave	Survey wave, PSLSD 1993=0, OHS 1994=1, QLFS Dec 2015=54
	F3	wave	Survey wave, PSLSD 1993=0, OHS 1994=1, QLFS Dec 2015=54
	F1	wave	Survey wave, PSLSD 1993=0, OHS 1994=1, QLFS Dec 2015=54
	F1	year	Survey year