Table 3.
Sensitivity of combined circulatory disease risk estimates to study exclusion (excess relative risk (ERR)/Sv plus 95% CI) [all assuming as baseline inclusion of Muirhead et al. (2009) and exclusion of McGeoghegan et al. (2008) (as per bottom row of Table 2)] and contribution to heterogeneity χ2 statistic (+degrees of freedom, df)
Studies excluded | ERR /Sv (95% CI) | χ2statistic (df) |
---|---|---|
A-bomb (Preston et al. 2003; Yamada et al. 2004) | 0.11 (0.07, 0.14)## | 8.64 (6) |
US peptic ulcer (Carr et al. 2005) | 0.08 (0.06, 0.11)## | 2.14 (2) |
UK ankylosing spondylitis (Darby et al. 1987) | 0.09 (0.06, 0.11)## | 5.99 (2) |
Massachusetts TB (Davis et al. 1989) | 0.10 (0.07, 0.13)## | 15.82 (1) |
IARC 15-country workers (Vrijheid et al. 2007) | 0.08 (0.05, 0.11)## | 0.00 (1) |
UK 3rd NRRW analysis (Muirhead et al. 2009) | 0.08 (0.05, 0.11)## | 1.32 (1) |
German uranium miners (Kreuzer et al. 2006) | 0.08 (0.06, 0.11)## | 4.67 (1) |
Chernobyl recovery workers (Ivanov et al. 2006) | 0.08 (0.05, 0.11)## | 0.84 (1) |
Mayak workers (Azizova and Muirhead 2009) | 0.04 (0.01, 0.07)# | 53.73 (2) |
Three Mile Island (Talbott et al. 2003) | 0.08 (0.05, 0.11)## | 11.62 (2) |
None (All studies) | 0.08 (0.05, 0.11)## | 104.76 (18) |
p value for heterogeneity p < 0.001
p value for heterogeneity p < 0.00000001