No of subjects | % H pylori positive | OR (95% CI) | p for trend1-150 | p for trend† | |
---|---|---|---|---|---|
Sex | |||||
Men | 631 | 49 | 1.5 (1.1 to 1.9) | ||
Women | 389 | 40 | 1.0 | 0.003 | 0.002 |
No of siblings | |||||
0 | 97 | 28 | 1.0 | ||
1/2 | 371 | 41 | 1.8 (1.1 to 3.0) | ||
3/4 | 269 | 50 | 2.6 (1.6 to 4.3) | ||
⩾ 5 | 281 | 54 | 3.1 (1.9 to 5.1) | < 0.0001 | 0.0009 |
Birth order | |||||
1st | 319 | 41 | 1.0 | ||
2nd/3rd | 407 | 43 | 1.1 (0.8 to 1.4) | ||
4th/5th | 164 | 53 | 1.6 (1.1 to 2.4) | ||
> 5th | 127 | 56 | 1.8 (1.2 to 2.7) | 0.0005 | 1.0 |
Birth weight, pounds (kg) | |||||
⩽ 5.5 (2.50) | 44 | 34 | 1.0 | ||
– 6.5 (2.95) | 151 | 48 | 1.7 (0.9 to 3.5) | ||
– 7.5 (3.41) | 317 | 41 | 1.3 (0.7 to 2.5) | ||
– 8.5 (3.86) | 326 | 46 | 1.5 (0.8 to 3.0) | ||
– 9.5 (4.32) | 127 | 54 | 2.1 (1.0 to 4.4) | ||
> 9.5 (4.32) | 55 | 56 | 2.2 (1.0 to 5.0) | 0.03 | 0.002 |
Weight at 1 year, pounds (kg) | |||||
⩽ 18 (8.18) | 75 | 51 | 2.6 (1.2 to 5.6) | ||
– 20 (9.09) | 207 | 46 | 2.0 (1.0 to 4.0) | ||
– 22 (10.00) | 330 | 48 | 2.0 (1.1 to 3.8) | ||
– 24 (10.91) | 251 | 44 | 1.7 (0.9 to 3.2) | ||
– 26 (11.82) | 109 | 43 | 1.5 (0.7 to 3.1) | ||
> 26 (11.82) | 48 | 33 | 1.0 | 0.002 | 0.0008 |
Social class at birth | |||||
Manual | 147 | 46 | 1.1 (0.7 to 1.5) | ||
Non-manual | 815 | 45 | 1.0 | 0.5 | 0.7 |
Current social class | |||||
Manual | 367 | 50 | 1.5 (1.1 to 1.9) | ||
Non-manual | 643 | 39 | 1.0 | 0.005 | 0.1 |
Social class at birth was unclassifiable for 58 subjects, and current social class for 10 subjects.
↵1-150 By logistic regression, allowing for sex, † allowing for all other variables in the table.
OR = odds ratio; CI = confidence interval.