Table 2.
Number of deaths, loss to follow up (LTFU), person-years, mortality rates (MR) per 100 person years and mortality rate ratios (RR) of cohort participants, according to year of first visit and follow-up period. INI cohort, 2004–2015 (N = 3879)
| Follow-up period/Year of first visit | Deaths (%) | LTFU (%) | Person-years | MR (95% CI) | RR (95% CI) |
|---|---|---|---|---|---|
| 0–90 days | |||||
| 2004–2006 | 27 (3.5) | 6 (0.7) | 193.5 | 14.0 (9.6–20.3) | 0.97 (0.58–1.62) |
| 2007–2009 | 34 (3.2) | 16 (1.5) | 254.7 | 13.4 (9.5–18.7) | 0.93 (0.57–1.51) |
| 2010–2012 | 39 (3.6) | 19 (1.8) | 254.6 | 15.3 (11.2–21.0) | 1.07 (0.67–1.71) |
| 2013–2015 | 32 (3.4) | 23 (2.4) | 222.8 | 14.4 (10.2–20.3) | 1.00 |
| 91–365 days | |||||
| 2004–2006 | 31 (4.0) | 7 (0.9) | 565.8 | 5.5 (3.9–7.8) | 3.93 (1.95–8.78)* |
| 2007–2009 | 29 (2.9) | 24 (2.4) | 738.5 | 3.9 (2.7–5.7) | 2.82 (1.39–6.32)* |
| 2010–2012 | 19 (1.9) | 22 (2.2) | 740.5 | 2.6 (1.6–4.0) | 1.84 (0.86–4.27) |
| 2013–2015 | 9 (1.0) | 40 (4.5) | 646.0 | 1.4 (0.7–2.7) | 1.00 |
*p-value < 0.05