Research Article

Observational Research on Alcohol Use and Chronic Disease Outcome: New Approaches to Counter Biases

Table 6

Association between alcohol use and health status using the traditional approach plus offsetting for residual confounding effects and intention-to-treat analysis (RR: relative risk).

IRR95% confidence interval

Alcohol use status
 Lifetime abstainer1.00
 Current infrequent1.040.991.10
 Current light0.990.931.04
 Current moderate0.930.861.00
 Current heavier1.080.991.17
Gender
 Male1.00
 Female0.910.880.95
Age group
 18–241.00
 25–342.121.832.45
 35–443.533.084.05
 45–544.794.195.46
 55–645.364.696.12
 65–743.422.884.06
 75+3.613.044.30
Race
 White1.00
 Black1.131.081.18
 Asian0.910.821.01
 All other race groups1.271.111.45
Marital status
 Married currently living with spouse 1.00
 Married not currently living with spouse 0.920.781.08
 Widowed1.030.961.11
  Divorced1.121.051.18
 Separated1.181.081.29
 Never married1.000.931.07
 Living with partner1.090.991.20
Education level
 12th grade or lower 1.00
 High-school graduates 0.780.750.81
 Bachelor’s degree0.520.480.57
 Master degree or above0.460.410.52
Employment status
 Working for pay at a job or business1.00
 With a job or business but not at work1.511.271.79
 Looking for work1.401.261.55
 Working, but not for pay, at a family-owned job or business1.330.991.79
 Not working at a job or business and not looking for work3.042.873.21
Total combined family income
 $0–$34,9991.00
 $35,000–$74,9990.720.680.75
 $75,000–$99,9990.530.470.59
 $100,000 and over0.410.370.46
Private insurance cover
 Yes1.00
 No1.421.351.49
Home tenure status
 Owned or being bought1.00
 Rented1.151.101.20
 Other arrangement1.161.061.27
Year of survey
 20081.00
 20090.970.931.02
 20100.960.911.00
Region of residence
 Northeast1.00
 Midwest1.030.971.09
 South1.151.081.21
 West1.030.961.09
Number of family members under 18 years of age
 01.00
 10.980.921.05
 20.930.851.00
 3+0.820.740.91
Number of family members aged 65 and older
 01.00
 10.920.831.01
 2+1.100.961.25