Logistic regression analysis for incident ischaemic heart disease by H pylori strain
| Adjustment | Hp+ and CagA− v Hp− | Hp+ and CagA+ v Hp− | Test3-150 for difference between odds ratios (Ho:OR1 = OR2) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| OR1 | 95% CI | OR2 | 95% CI | ||||||
| All available data (n=370) | 1.27 | (0.71 to 2.26) | 1.33 | (0.81 to 2.18) | 0.86 | ||||
| (1) Unadjusted | |||||||||
| Data restricted to subjects with complete information on confounders (n=354) | |||||||||
| (1) Unadjusted | 1.26 | (0.70 to 2.28) | 1.31 | (0.78 to 2.17) | 0.89 | ||||
| (2) Model 1 plus age, BMI, systolic blood pressure, smoking history, and total cholesterol | 1.07 | (0.57 to 2.03) | 1.21 | (0.71 to 2.07) | 0.66 | ||||
| (3) Model 2 plus own and father's social class | 1.19 | (0.61 to 2.29) | 1.33 | (0.77 to 2.30) | 0.69 | ||||
| (4) Model 3 plus height and lung function | 1.17 | (0.61 to 2.28) | 1.28 | (0.74 to 2.23) | 0.76 | ||||
| (5) Model 4 plus fibrinogen and white cell count | 1.25 | (0.64 to 2.46) | 1.38 | (0.78 to 2.43) | 0.75 | ||||
↵3-150 Based on difference in fit between logistic regression models, one containing a two level factor for H pylori (Hp+, Hp−) and one containing a three level factor forH pylori (Hp−, Hp+/Cag A−, Hp+/Cag A+).
BMI, body mass index; CI, confidence interval; OR, odds ratio.