Follow up period | 6 month follow up | 3 month follow up | Difference (95% CI) |
---|---|---|---|
*CI defined in glossary. Difference and CI calculated from data in article; all differences are not significant. | |||
12 months | 17% | 21% | 4% (−2.8 to 10) |
24 months | 23% | 20% | 3% (−3.3 to 10) |
36 months | 16% | 18% | 2% (−8.8 to 4) |