From: Use of the integrated health interview series: trends in medical provider utilization (1972-2008)
 |  | MODEL 1 |  | MODEL 2 |  | MODEL 3 |
---|---|---|---|---|---|---|
 | OOR a | (95% CI b ) | OR | (95% CI) | OR | (95% CI) |
Health Status | ||||||
   Excellent, Very Good or Good | - | - | - | - | - | - |
   Fair or Poor | 2.95 | (2.90-3.01) | 2.97 | (2.92-3.02) | 2.97 | (2.91-3.02) |
Age Group | ||||||
   18-20 | - | - | - | - | - | - |
   21-24 | 0.89 | (0.87-0.92) | 0.91 | (0.88-0.93) | 0.88 | (0.85-0.91) |
   25-28 | 0.71 | (0.69-0.73) | 0.75 | (0.73-0.78) | 0.71 | (0.68-0.73) |
   29-32 | 0.61 | (0.60 - 0.63) | 0.67 | (0.64-0.69) | 0.60 | (0.58-0.62) |
   33-36 | 0.55 | (0.54-0.57) | 0.61 | (0.59-0.64) | 0.53 | (0.51-0.55) |
   37-40 | 0.52 | (0.50-0.53) | 0.59 | (0.56-0.61) | 0.48 | (0.46-0.50) |
   41-44 | 0.50 | (0.48-0.52) | 0.59 | (0.56-0.61) | 0.47 | (0.45-0.49) |
   45-48 | 0.52 | (0.51-0.54) | 0.64 | (0.61-0.66) | 0.49 | (0.46-0.51) |
   49-52 | 0.57 | (0.55-0.59) | 0.71 | (0.68-0.74) | 0.52 | (0.50-0.55) |
   53-56 | 0.60 | (0.58-0.62) | 0.78 | (0.74-0.82) | 0.55 | (0.52-0.59) |
   57-60 | 0.66 | (0.64-0.69) | 0.91 | (0.86-0.96) | 0.62 | (0.58-0.66) |
   61-64 | 0.71 | (0.69-0.74) | 1.05 | (0.99-1.11) | 0.69 | (0.64-0.74) |
   65-68 | 0.83 | (0.80-0.87) | 1.36 | (1.28-1.45) | 0.85 | (0.79-0.92) |
   69-72 | 1.01 | (0.97-1.05) | 1.82 | (1.70-1.94) | 1.10 | (1.01-1.19) |
   73-76 | 1.25 | (1.19-1.30) | 2.41 | (2.24-2.59) | 1.40 | (1.28-1.54) |
   77-80 | 1.40 | (1.32-1.48) | 2.85 | (2.62-3.09) | 1.61 | (1.46-1.78) |
   81-84 | 1.73 | (1.58-1.89) | 3.61 | (3.23-4.03) | 2.01 | (1.78-2.27) |
   85-99 | 2.46 | (1.81-3.33) | 4.56 | (3.33-6.23) | 2.47 | (1.80-3.39) |
Birth Cohort | ||||||
   1950-1959 |  |  | - | - | - | - |
   1940-1949 |  |  | 1.01 | (1.00-1.03) | 1.11 | (1.09-1.14) |
   1930-1939 |  |  | 0.93 | (0.91-0.96) | 1.14 | (1.11-1.18) |
   1920-1929 |  |  | 0.80 | (0.77-0.83) | 1.08 | (1.03-1.13) |
   1910-1919 |  |  | 0.60 | (0.58-0.63) | 0.89 | (0.84-0.95) |
   1900-1909 |  |  | 0.41 | (0.38-0.43) | 0.66 | (0.61-0.71) |
Centered Year | ||||||
   Centered Year |  |  |  |  | 1.02 | (1.01-1.02) |
   Centered Year Squared |  |  |  |  |  |  |