Select Committee on Health Minutes of Evidence

Appendix 1

Table 7

SMOKING AND LUNG CANCER CASE-CONTROL STUDIES PUBLISHED IN 1950

Author	No of men		Per cent of:
			Non-smokers		Heavy smokers
	Lung	Controls	Lung	Controls	Lung	Controls
	cancer		cancer		cancer
Schrek et al, USA	82	522	14.6	23.9	18	9
Levin et al, USA	236	481	15.3	21.7	—	—
Mills & Porter, USA	444	430	7	31	—	—
Wynder & Graham, USA	605	780	1.3*	14.6*	51	19
Doll & Hill, UK	649	649	0.3*	4.2*	26	13

  *Lifelong non-smokers, with ex-smokers carefully excluded.

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Prepared 14 January 2000