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. 1999 Aug 28;319(7209):537–541. doi: 10.1136/bmj.319.7209.537

Table 3.

Infection with H pylori among children according to father’s job

Father’s job No of families No (%) of children infected with H pylori 95% CI
White collar worker 66    19/91 (21)* 12.5 to 29.5
Blue collar worker 237 124/331 (37) 31.7 to 42.3
Farmer 87  52/128 (41) 32.3 to 49.7
Total 390 195/550 (35)
*

P <0.005 compared with other groups. 

Father’s job not available for 26 families.