Table 4 Rates and incidence rate ratios (IRR) of parathyroidectomy per calendar year in the Swedish dialysis and transplant population
Calendar year | Rate/1000 person-years | Unadjusted IRR | Adjusted* IRR |
|---|---|---|---|
(95% CI) | (95% CI) | (95% CI) | |
1991 | 5.2 (1.3-20.8) | 0.18 (0.04-0.74) | 0.45 (0.11-1.87) |
1992 | 0.9 (0.1-6.6) | 0.06 (0.00-0.47) | 0.08 (0.01-0.60) |
1993 | 10.2 (6.3-16.4) | 0.82 (0.46-1.46) | 0.96 (0.54-1.72) |
1994 | 11.9 (8.1-17.4) | 1.13 (0.68-1.88) | 1.18 (0.71-1.96) |
1995 | 8.8 (5.9-13.3) | 0.90 (0.54-1.54) | 0.94 (0.56-1.60) |
1996 | 12.1 (8.7-16.7) | 1.30 (0.81-2.06) | 1.33 (0.83-2.11) |
1997 | 9.0 (6.3-12.9) | 1.00 (0.61-1.62) | 1.04 (0.64-1.69) |
1998 | 7.0 (4.7-10.2) | 0.82 (0.50-1.37) | 0.83 (0.50-1.38) |
1999 | 7.1 (4.1-10.3) | 0.89 (0.54-1.45) | 0.87 (0.53-1.43) |
2000 | 8.0 (5.8-11.2) | 1.00 | 1.00 |
2001 | 13.5 (10.6-17.3) | 1.78 (1.18-2.7) | 1.75 (1.16-2.64) |
2002 | 13.2 (10.4-16.9) | 1.75(1.16-2.64) | 1.77 (1.17-2.67) |
2003 | 12.4 (9.7-15.9) | 1.69 (1.11-2.56) | 1.70 (1.12-2.56) |
2004 | 12.6 (9.9-16.0) | 1.79 (1.19-2.70) | 1.76 (1.17-2.65) |
2005 | 10.3 (8.0-13.3) | 1.45 (0.95-2.20) | 1.47 (0.97-2.24) |
2006 | 4.4 (3.0-6.4) | 0.64 (0.39-1.07) | 0.64 (0.39-1.07) |
2007 | 5.4 (3.9-7.6) | 0.81 (0.51-1.31) | 0.82 (0.51-1.31) |
2008 | 5.8 (4.2-8.0) | 0.88 (0.56-1.40) | 0.91 (0.57-1.44) |
2009 | 5.7 (4.1-7.8) | 0.88 (0.56-1.40) | 0.90 (0.57-1.42) |