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Table 5 Odds ratios (OR) for hazardous alcohol use from logistic regression models with previous alcohol-related hospitalization, gender, age group, and interactions between hospitalization and; gender, age group, numbers of years after hospitalization, number of hospitalizations during a year, and number of years with hospitalizations as independent variables

From: Alcohol abstinence, non-hazardous use and hazardous use a decade after alcohol-related hospitalization: registry data linked to population-based representative postal surveys

 

Bivariate1

Model 12

Model 2

Model 3

 

OR

95 CI

OR

95 CI

OR

95 CI

OR

95 CI

All

        

Non-hospitalized

1.0

 

1.0

   

1.0

 

Hospitalized

2.58***

2.16-3.08

2.41***

2.01-2.89

  

6.12***

2.97-12.62

2006

1.0

 

1.0

   

1.0

 

2002/2007 survey

0.36***

0.34-0.38

0.36***

0.34-0.38

  

0.35***

0.34-0.37

Men

1.0

 

1.0

   

1.0

 

Women

0.82***

0.78-0.86

0.83***

0.79-0.87

  

0.83***

0.79-0.87

Age group

        

23-34

1.0

 

1.0

   

1.0

 

35-44

0.75***

0.70-0.81

0.78***

0.73-0.85

  

0.79***

0.73-0.85

45-54

1.07

0.99-1.15

1.13**

1.05-1.21

  

1.13**

1.05-1.22

55-64

1.02

0.96-1.10

1.09*

1.01-1.17

  

1.10**

1.03-1.19

65-84

0.62***

0.58-0.67

0.67***

0.62-0.72

  

0.68***

0.63-0.73

With previous alcohol-related hospitalizations

       

2006

1.0

   

1.0

 

1.03

 

2002/2007 survey

0.79

0.55-1.15

  

0.84

0.57-1.23

2.36***

1.59-3.49

Men

1.0

   

1.0

 

1.04

 

Women

1.13

0.79-1.62

  

1.01

0.69-1.48

1.22

0.83-1.80

Age group

        

23-34

1.0

   

1.0

 

1.05

 

35-44

0.68

0.35-1.32

  

0.60

0.30-1.18

0.76

0.38-1.50

45-54

0.79

0.44-1.44

  

0.64

0.34-1.19

0.56

0.30-1.06

55-64

0.55*

0.32-0.97

  

0.44**

0.24-0.80

0.40**

0.22-0.73

65-84

0.31***

0.16-0.58

  

0.25***

0.13-0.49

0.37***

0.19-0.72

Years since last hospitalization

0.91**

0.85-0.97

  

0.88***

0.82-0.94

0.88***6

0.82-0.94

Years with hospitalizations

1.06

0.94-1.18

  

0.88

0.72-1.08

0.88

0.72-1.08

Number of Hospitalizations

1.02

1.00-1.04

  

1.04

0.99-1.08

1.04

0.99-1.08

  1. *p < .05 **p < .01 ***p < .001.
  2. 1First bivariate relationships for the variables hospitalization, survey, gender and age groups were estimated in the entire sample, then bivariate relationships were estimated separately for the hospitalized including the three additional variables, i.e., number of years since hospitalization, number of hospitalizations during a year, and number of years with hospitalizations.
  3. 2In Models 1 and 2 the variables hospitalization, survey, gender, and age group were included in the first model for the entire sample, while the second model estimated relationships among previously hospitalized. Besides gender and age group, the second model for the previously hospitalized also included the three variables: number of years since the last hospitalization, the number of hospitalizations during a year, and the number of years with hospitalizations.
  4. 3In Model 3 contrasts among those with previous hospitalizations show the interaction terms, i.e., whether the OR between surveys among the hospitalized differ significantly from the corresponding OR for the non-hospitalized. In this case OR was 1.37 times larger than 0.69.
  5. 4The contrast shows the interaction term, i.e., OR was 0.76 times that of 1.85.
  6. 5The contrasts show the interaction terms. Since age group 23–34 is the reference category its deviation corresponds to OR between the hospitalized and the not hospitalized in general. Thus, for age group 23–34 OR for the hospitalized was 0.11 times that of the non-hospitalized (because the corresponding OR for the non-hospitalized in this age group is 1.0).
  7. 6The estimate is pooled; the 2006 OR was 0.96, the 2002/2007 OR was 0.72, and the difference was significant (p < .001).
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BMC Public Health

ISSN: 1471-2458

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