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) |
*Adjusted for gender, age at baseline (in categories), cause of renal disease, region, years with functioning renal transplant (in categories).