Table 1.
Comparison of results from cohort studies of endoscopic screening for gastric cancer
| Author | Riecken et al[9] | Matsumoto et al[10] | Hosokawa et al[11] | Hamashima et al[12] | Hamashima et al[13] |
| Publication | 2002 | 2007 | 2011 | 2015 | 2015 |
| Country | China | Japan | Japan | Japan | Japan |
| Target age, yr | 35-64 | ≥ 40 | Average: 50.0 | 40-79 | 40-79 |
| Follow-up, yr | 9 | 5 | 5 | 6 | |
| Number of subjects | 4364 | 7178 | 18011 | 16373 | 9950 |
| Comparators | - | - | Radiographic screening | - | Radiographic screening |
| Number of comparators | - | - | 36870 | - | 4324 |
| Outcome indicators | SMR | SMR | Hazard ratio (HR) | SMR | Relative risk |
| Main results | 1.01 | Male: 0.71 | HR = 0.15 | 0.43 | Adjusted RR2 |
| (95%CI: 0.72-1.37) | (95%CI: 0.33-1.10) | (95%CI: 0.05-0.50) | (95%CI: 0.30-0.57) | 0.327 | |
| Female: 0.62 | Adjusted HR1 = 0.23 | (95%CI: 0.118-0.908) | |||
| (95%CI: 0.19-1.05) | (95%CI: 0.07-0.76) |
1
Adjusted HR by sex and age;
2
Adjusted RR by sex, age group, and resident city. SMR: Standard mortality ratio; CI: Confidence interval; HR: Hazard ratio; RR: Relative risk.