Table 4

COHb levels in older men: relations to prevalent cardiovascular disease.

Model 1

Model 2


current smoking

COHb

COHb


N

%

Geometric mean

95%

CI

p

Geometric mean

95%

CI

p


Recall of doctor diagnosis of

    Myocardial infarction

0.5927

0.1744

Yes

382

15.7

0.47

0.42

0.53

0.48

0.44

0.53

No

3147

19.0

0.46

0.44

0.47

0.45

0.44

0.47

    Angina

0.1972

0.0492

Yes

522

15.4

0.48

0.44

0.53

0.49

0.45

0.53

No

3007

19.2

0.45

0.44

0.47

0.45

0.44

0.47

    Stroke

0.0644

0.9806

Yes

199

21.3

0.52

0.45

0.61

0.46

0.40

0.52

No

3330

18.5

0.45

0.44

0.47

0.46

0.44

0.47

    Peripheral arterial disease

0.0030

0.2144

Yes

162

23.1

0.59

0.50

0.69

0.50

0.43

0.57

No

3367

18.4

0.45

0.44

0.47

0.45

0.44

0.47


Model 1: Includes the relevant factor with adjustment for age, time of day, season.

Model 2: Includes the relevant factor with adjustment for age, time of day, season, and other factors which were statistically significant in the univariate analyses

(region, social class, employment status, housing tenure, active smoking, passive smoking, gas cooking, central heating). An interaction term for active smoking*time of day is also included in the model (see text).

p values presented refer to the results of statistical tests of heterogeneity in COHb levels between the explanatory variable categories

Whincup et al. BMC Public Health 2006 6:189   doi:10.1186/1471-2458-6-189

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