Table 4.
Age distribution of unexposed and exposed subjects (in years) |
||||||
---|---|---|---|---|---|---|
N(65, 102) vs. N(70, 102) |
N(60, 102) vs. N(70, 102) |
N(50, 102) vs. N(70, 102) |
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d | Unconditional | Conditional | Unconditional | Conditional | Unconditional | Conditional |
Odds ratio associated with a 10-year increase in age = 1 | ||||||
0 | 0.60 | 0.61 | 0.57 | 0.58 | 0.52 | 0.60 |
1 | 0.58 | 0.59 | 0.60 | 0.61 | 0.51 | 0.59 |
2 | 0.62 | 0.63 | 0.58 | 0.60 | 0.50 | 0.58 |
3 | 0.61 | 0.62 | 0.59 | 0.60 | 0.50 | 0.58 |
Odds ratio associated with a 10-year increase in age = 1.5 | ||||||
0 | 0.61 | 0.62 | 0.57 | 0.58 | 0.49 | 0.56 |
1 | 0.56 | 0.57 | 0.56 | 0.57 | 0.48 | 0.54 |
2 | 0.58 | 0.58 | 0.56 | 0.57 | 0.48 | 0.54 |
3 | 0.60 | 0.62 | 0.55 | 0.56 | 0.50 | 0.56 |
Odds ratio associated with a 10-year increase in age = 2 | ||||||
0 | 0.57 | 0.58 | 0.56 | 0.57 | 0.50 | 0.56 |
1 | 0.59 | 0.61 | 0.53 | 0.54 | 0.50 | 0.57 |
2 | 0.57 | 0.59 | 0.56 | 0.57 | 0.51 | 0.58 |
3 | 0.60 | 0.61 | 0.56 | 0.58 | 0.52 | 0.59 |
Odds ratio associated with a 10-year increase in age = 3 | ||||||
0 | 0.58 | 0.59 | 0.56 | 0.57 | 0.53 | 0.59 |
1 | 0.57 | 0.58 | 0.53 | 0.54 | 0.50 | 0.57 |
2 | 0.57 | 0.58 | 0.55 | 0.57 | 0.52 | 0.60 |
3 | 0.61 | 0.63 | 0.54 | 0.56 | 0.53 | 0.61 |
Cases and controls were matched by age ± d. The odds ratio associated with the exposure was 1 under the null hypothesis, H0: βe = 0. Numbers of matching sets were 400, 500, and 900 in the three scenarios of age distributions.