Environmental tobacco smoke exposure and lung cancer: A systematic review

Table 2 Further details of the 102 studies

Ref.	ETS exposures1	Adjustment variables used2	Extent (%) of histological confirmation	Results by histological type	Dose-response results available3
GARFI1	s	7	NA		Yes
CHAN	s	0	80
CORREA	s c4	1	97		Yes
TRICHO	s	0	27	Yes	Yes
BUFFLE	h	0	100		Yes
HIRAYA	s	2	NA		Yes
KABAT1	s h w	4	100
GARFI2	s h w c o tot	4	100	Yes	Yes
LAMW	s tot	1	100	Yes
WU	s w c tot4	2	100	Yes
AKIBA	s c	6	53		Yes
LEE	s h w tr o tot	3	38	Yes
BROWN1	tot	3	100	Yes
GAO	s h c tot	2	43		Yes
HUMBL1	s	2	100		Yes
KOO	s h w c tot	5	97	Yes	Yes
LAMT	s	0	100	Yes	Yes
PERSHA	s c	2	83	Yes	Yes
BUTLER	s	2	100
GENG	s	0	85		Yes
INOUE	s	3	NA		Yes
SHIMIZ	s h w	3	100
CHOI	s	0	100		Yes
HOLE	h	2	NA		Yes
SCHOEN	s	6	100
SVENSS	h c tot	1	70
JANERI	s h w c o	3	100	Yes	Yes
KALAND	s h w	5	48	Yes	Yes
SOBUE	s h c	3	100
WU-WIL	s h w c	5	42
LIUZ	h	3	17
BROWN2	s h w c	2	76	Yes	Yes
STOCKW	s h w4 c o4 tot	3	100	Yes	Yes
DU	s	2	NA		Yes
LIUQ	s	3	32		Yes
FONTHA	s h w c o tot	10	100	Yes	Yes
LAYARD	s	3	NA		Yes
DEWAAR	tot	0	71		Yes
KABAT2	s h w c tr o tot	6	100		Yes
SCHWAR	h w	2	100
SUN	s h w c hw tot	2	100	Yes
WANGS	tot	0	100
WANGT	s w c	1	57		Yes
CARDEN	s h w o tot	8	NA		Yes
ZHENG	h	2	82	Yes	Yes
AUVINE	tot	1	NA
BOFFET	s h w c tr o tot	7	96	Yes	Yes
SHEN	tot	9	100	Yes	Yes
ZARIDZ	s h w c	2	100	Yes	Yes
BOFFE2	s w c tot	5	100	Yes	Yes
JEE	s	5	0		Yes
RAPITI	s w c tr	3	100	Yes	Yes
SPEIZE	tot	1	100
ZHONG	s h w c tot	7	57	Yes	Yes
LEECH	s h w c tot	7	100		Yes
MALATS	s tot	2	100		Yes
WANGL	h c	6	32		Yes
JOHNSO	h w c tot	4	100		Yes
LAGARD	h tot	6	100
NISHIN	s h	7	NA
OHNO	s w c tr o tot	2	100		Yes
RACHTA	c	21	100	Yes
ENSTRO	s	8	NA
ZATLOU	c tot	3	100	Yes
IARCKR	s w c	2	100		Yes
MCGHEE	h	2	0		Yes
EPICA	h w tot	7	NA
FANG	tot	8	100		Yes
FRANCO	h	2	100
GORLOV	h w hw tot	4	100
NEUBER	tot4	3	100
RYLAND	h w	3	98
WEN	s w c tot	9	NA		Yes
YU	tot	20	100		Yes
ZEKA	w	4	NA		Yes
HILL1	h	9	NA
HILL2	h	9	NA
LOPEZC	tot	0	100
ASOMAN	h w o	0	100
GALLEG	tot	0	100
KURAHA	s w c hw tot	5	90	Yes	Yes
PANDEY	c tot	0	NA		Yes
YANG	c tot	5	NA
OLIVOM	c	4	100	Yes
TSE	h w tot	9	100	Yes	Yes
LIANG	c tot	0	100
BRENNE	h w c tot	3	100		Yes
JIANG	tot	17	100	Yes
EPICC	c	10	NA		Yes
KIYOHA	s	0	100
HE	tot	9	88		Yes
LIM	h	0	96
LIN	tot	9	100		Yes
FERREC	c tot4	3	72
ALZOUG	s h w c tot	3	NA	Yes	Yes
GELAC	s h w hw tot	6	100		Yes
MASJED	s h w o tot	4	100	Yes
REN	tot	5	100
SEKI	s	7	94	Yes
WHIOS	h4 w4 c4 tot	0	0		4
ILCCO	h w c tot	3	100	Yes	Yes
TORRES	h	2	99		Yes

¹ETS exposure measures reported, coded as s: Spousal; h: Household; w: Work; c: Childhood; hw: Exposure at both home and work; tr: Travel; o: Social/other; tot: Total exposure. Codes marked 4 represent exposures for which the only result presented is a statement that no association was found;

²Number of factors adjusted for, excluding sex;

³Coded as yes: Dose response result presented;

⁴The only dose response result presented is a statement that no dose response was found. NA: Not available.