Table 1. Follow-up periods, losses to follow-up, and attrition rates per 100 person-years. Project Horizonte, 1994–2011.
Follow-up (years) | Person-time | Losses to follow-up (n) | Attrition rate (100 person-years) | 95%CI |
---|---|---|---|---|
0 ┤1 | 1,016.85 | 233 | 22.91 | 20.15–26.05 |
1 ┤2 | 775.24 | 104 | 13.42 | 11.07–16.26 |
2 ┤3 | 609.35 | 74 | 12.14 | 9.67–15.25 |
3 ┤4 | 490.38 | 38 | 7.75 | 5.64–10.64 |
4 ┤5 | 405.50 | 30 | 7.40 | 5.18–10.58 |
5 ┤6 | 342.02 | 26 | 7.60 | 5.18–11.16 |
6 ┤7 | 276.38 | 17 | 6.15 | 3.82–9.89 |
7 ┤8 | 226.93 | 11 | 4.85 | 2.68–8.75 |
8 ┤9 | 185.94 | 16 | 8.60 | 5.27–14.04 |
9 ┤10 | 146.49 | 11 | 7.51 | 4.16–13.56 |
> 10 | 446.69 | 11 | 2.46 | 1.36–4.45 |
| ||||
Total | 4,921.77 | 571 | 11.60 | 10.69–12.59 |