Association between Sleep Traits and Lung Cancer: A Mendelian Randomization Study

Table 1

Characteristics of sleep traits in UK Biobank and lung cancer consortium.

(a)

Exposure	Consortium	Sample size	Population
Chronotype	MRC-IEU	413343	European
Getting up in the morning	MRC-IEU	461658	European
Sleep duration	MRC-IEU	460099	European
Nap during the day	MRC-IEU	462400	European
Sleeplessness/insomnia	MRC-IEU	462341	European
Current tobacco smoking	MRC-IEU	462434	European
Pack years of smoking	MRC-IEU	142387	European

(b)

Outcomes	Consortium	Cases/control	Sample size	Population
Lung cancer	ILCCO	11348/15861	27209	European
Squamous cell cancer	ILCCO	3275/15038	18313	European
Adenocarcinoma	ILCCO	3442/14894	18336	European