Gastric cancer | Cardia cancer | Non-cardia gastric cancer | ||||
Cases (n)/total | SIR (95% CI) | Cases (n)/total | SIR (95% CI) | Cases (n)/total | SIR (95% CI) | |
All | 2219/797 067 | 3.38 (3.25 to 3.53) | 567/797 067 | 3.55 (3.27 to 3.86) | 1652/797 067 | 3.33 (3.17 to 3.50) |
Gastro-oesophageal reflux | 557/201 868 | 3.04 (2.80 to 3.31) | 175/201 868 | 3.84 (3.29 to 4.45) | 382/201 868 | 2.78 (2.51 to 3.07) |
Peptic ulcers | 721/79 597 | 8.75 (8.12 to 9.41) | 71/79 597 | 3.51 (2.74 to 4.43) | 650/79 597 | 10.45 (9.66 to 11.28) |
Gastroduodenitis | 350/104 955 | 3.68 (3.31 to 4.09) | 63/104 955 | 2.71 (2.09 to 3.47) | 287/104 955 | 3.99 (3.55 to 4.48) |
Dyspepsia | 136/43 901 | 3.07 (2.58 to 3.63) | 33/43 901 | 3.10 (2.13 to 4.35) | 103/43 901 | 3.07 (2.50 to 3.72) |
Helicobacter pylori | 440/58 366 | 9.76 (8.87 to 10.71) | 48/58 366 | 4.19 (3.09 to 5.55) | 392/58 366 | 11.67 (10.53 to 12.87) |
No H. pylori | 1779/781 955 | 2.91 (2.78 to 3.05) | 519/781 955 | 3.50 (3.21 to 3.82) | 1302/781 955 | 2.73 (2.58 to 2.88) |
NSAID exposure | 347/256 598 | 1.82 (1.64 to 2.03) | 94/256 598 | 2.07 (1.67 to 2.53) | 253/256 598 | 1.75 (1.54 to 1.97) |
Only NSAID exposure | 93/118 987 | 1.41 (1.14 to 1.73) | 36/118 987 | 2.29 (1.60 to 3.17) | 57/118 987 | 1.14 (0.86 to 1.48) |
Aspirin exposure | 872/293 590 | 2.42 (2.26 to 2.60) | 211/293 590 | 2.73 (2.37 to 3.13) | 588/293 590 | 2.33 (2.14 to 2.53) |
Only aspirin exposure | 252/126 883 | 1.93 (1.70 to 2.18) | 85/126 883 | 2.73 (2.18 to 3.37) | 169/126 883 | 1.68 (1.43 to 1.95) |
One individual could have different indications, except for the group exposed only to NSAIDs or aspirin.
NSAIDs, non-steroidal anti-inflammatory drugs.