Table 3.
Summary estimates of relative risk for each risk group
| Study | Risk categorya | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| A | B | C | D | |||||||
| Author | Ref. | (Year) | RRb | (95% CI) | RRb | (95% CI) | RRb | (95% CI) | RRb | (95% CI) |
| Watabe | 10 | (2005) | 1.00 | Reference | 1.10 | (0.40–3.40) | 6.00 | (2.40–14.50) | 8.20 | (3.20–21.50) |
| Mizuno | 11 | (2010) | 1.00 | Reference | 4.20 | (0.96–18.40) | 11.23 | (2.71–46.51) | 14.81 | (2.47–88.80) |
| Yoshida | 12 | (2013) | 1.00 | Reference | 8.90 | (2.70–54.70) | 17.70 | (5.40–108.60) | 69.70 | (13.60–502.90) |
| Charvat | 6 | (2016) | 1.00 | Reference | 7.58 | (4.16–13.79) | 13.86 | (7.76–24.75) | 14.09 | (7.03–28.26) |
| Results of meta-analysis | 1.00 | Reference | 4.47 | (1.83–10.03) | 11.06 | (4.86–25.58) | 14.78 | (6.46–38.21) | ||
aGroup A: H. pylori (HP) negative [−]/atrophic gastritis (AG) negative [−], Group B: HP positive [+]/AG [−], Group C: HP [+]/AG [+], Group D: HP [−]/AG [+].
bRR, relative risk.