Pooled adjusted odds ratios with 95% confidence intervals for gastric cancer associated with a family history of gastric cancer stratified by sex, age, socioeconomic status, gastric cancer location, histological subtype, tobacco smoking, alcohol intake, fruit consumption and Helicobacter pylori infection in the StoP Project. No information for studies: (1) De Feo, Lagiou; (2) Foschi, Lagiou, Mu, Setiawan; (3) Mu, Setiawan; (4) La Vecchia, Lagiou, Mu, Setiawan, Machida-Montani; (5) La Vecchia, Lagiou, Mu, Setiawan, Machida-Montani; (6) De Feo, Lagiou, Pourfarzi, Pakseresht, Castaño-Vinyals; (7) De Feo, Lagiou, Pourfarzi, Pakseresht, Castaño-Vinyals, Nishimoto; (8) De Feo, Lagiou, Pourfarzi, Pakseresht, Castaño-Vinyals, Nishimoto; (9) De Feo, Palli, Lagiou, Pourfarzi, Setiawan, Santibañez; (10) De Feo, Lagiou, Pakseresht, Setiawan; (11) De Feo, Lagiou, Pourfarzi, Pakseresht, Setiawan, Nishimoto, Hamada; (12) Mu, Pourfarzi, Pakseresht, Setiawan, Nishimoto, Hamada; (13) De Feo, Lagiou, Mu, Pourfarzi, Pakseresht, Setiawan, Ye, Nishimoto, Hamada; (14) Lagiou, Hamada; (15) De Feo, Satiawan, Nishimoto; (16) De Feo, Lagiou, Setiawan; (17) La Vecchia, Foschi, De Feo, Palli, Lagiou, Setiawan, Santibañez; (18) La Vecchia, Foschi, De Feo, Palli, Lagiou, Pakseresht, Setiawan.