name	study	t	nt	caserisk	controlrisk	casenotrisk	controlnotrisk
Peter,2002	2	0	0	316	338	220	218
Abrams,2001	2	0	0	710	146	422	96
Todd,2003	2	0	0	1004	344	233	543
Yu,2007	2	0	0	3344	434	544	322
Wei,2007	1	65	32	0	0	0	0

