| Pre-attachment | Post-attachment | ||
---|---|---|---|---|
T0–2 years | T0–1 year | T0 + 1 year | T0 + 2 years | |
na | 406,001 | 410,140 | 410,140 | 320,428 |
Number of primary care visits | ||||
 Mean (s.d.) | 1.77 (2.68) | 1.76 (2.60) | 3.43 (3.08) | 2.20 (2.70) |
 99% CI | 1.76–1.78 | 1.75–1.77 | 3.42–3.44 | 2.19–2.21 |
Unadjusted model | ||||
 Exp (β) (IRR) | 1.00 (ref.) | 0.99 | 1.94 | 1.24 |
 99% CI |  | 0.99–1.00 | 1.93–1.95 | 1.24–1.25 |
 p-value |  | < 0.001 | < 0.001 | < 0.001 |
Adjusted modelb | ||||
 Exp (β) (IRR) | 1.00 (ref.). | 1.01 | 2.03 | 1.29 |
 99% CI |  | 1.00–1.01 | 2.02–2.04 | 1.28–1.30 |
 p-value |  | < 0.001 | < 0.001 | < 0.001 |