Age (y) | 1962–1966 | 1967–71 | Rate ratio | 95% Confidence interval | ||
---|---|---|---|---|---|---|
N | Rate | N | Rate | |||
*The three 5-year age groups 15–19, 20–24, and 25–29 years are the only age groups within our dataset that are covered by five years of births before and after the introduction of the measles vaccination programme. | ||||||
†Age adjusted ratio. | ||||||
Crohn’s disease | ||||||
25–29 | 80 | 11.4 | 70 | 10.1 | 0.88 | 0.64 to 1.23 |
20–24 | 70 | 10.2 | 67 | 10.4 | 1.02 | 0.72 to 1.43 |
15–19 | 43 | 6.2 | 43 | 6.3 | 1.02 | 0.66 to 1.56 |
15–29 | 193 | 9.3 | 180 | 8.9 | 0.96† | 0.78 to 1.18 |
Ulcerative colitis | ||||||
25–29 | 53 | 7.5 | 51 | 7.3 | 0.97 | 0.66 to 1.44 |
20–24 | 40 | 5.9 | 37 | 5.8 | 0.98 | 0.62 to 1.55 |
15–19 | 18 | 2.6 | 24 | 3.5 | 1.35 | 0.73 to 1.53 |
15–29 | 111 | 5.4 | 112 | 5.5 | 1.04† | 0.79 to 1.36 |