Table 2.
Events before and after parathyroidectomy
| Outcome | Before Parathyroidectomy (n=4435) | After Parathyroidectomy (n=4435) | Rate Ratio | |||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Patients with Event, n | Events, n | Percent (95% CI) | Rate per 100 Patient-Years (95% CI) | Patients with Event, n | Events, n | Median Follow-Up, yr | Percent (95% CI) | Rate per 100 Patient-Years (95% CI) | After versus Before (95% CI) | |
| 30-Day outcomes | ||||||||||
| Hospitalization | 1057 | 1251 | 0.08 | 23.8 (22.6 to 25.1) | 344.4 (325.2 to 363.6) | |||||
| ICU stay | 367 | 367 | 0.08 | 8.3 (7.5 to 9.1) | 105.8 (93.6 to 115.2) | |||||
| Hospital days | 1057 | 6259 | 0.08 | 23.8 (22.6 to 25.1) | 1724.4 (1681 to 1768) | |||||
| 1-Year outcomes | ||||||||||
| Hospitalization | 2477 | 6147 | 55.9 (54.4 to 57.3) | 138.6 (135.1 to 142.1) | 2832 | 7571 | 1.0 | 63.9 (62.4 to 65.3) | 192.0 (187.7 to 196.3) | 1.39 (1.34 to 1.44) |
| ICU stay required | 997 | 1680 | 22.5 (21.3 to 23.7) | 37.9 (36.1 to 39.7) | 1415 | 2524 | 1.0 | 31.9 (30.5 to 33.3) | 64.0 (61.5 to 66.5) | 1.69 (1.59 to 1.80) |
| Total hospital days | 2477 | 35,004 | 789.3 (781.0 to 797.5) | 2832 | 49,096 | 1.0 | 1245.0 (1234 to 1256) | 1.58 (1.56 to 1.60) | ||
| Cause-specific hospitalization | ||||||||||
| CHF | 391 | 568 | 8.8 (8.0 to 9.7) | 12.8 (11.8 to 13.9) | 307 | 453 | 1.0 | 6.9 (6.2 to 7.7) | 11.5 (10.4 to 12.5) | 0.90 (0.80 to 1.02) |
| CVA/TIA | 67 | 76 | 1.5 (1.2 to 1.9) | 1.7 (1.3 to 2.1) | 101 | 124 | 1.0 | 2.3 (1.8 to 2.7) | 3.1 (2.6 to 3.7) | 1.83 (1.38 to 2.43) |
| Dysrhythmia | 114 | 150 | 2.6 (2.1 to 3.0) | 3.4 (2.8 to 3.9) | 154 | 192 | 1.0 | 3.5 (2.9 to 4.0) | 4.9 (4.2 to 5.6) | 1.44 (1.16 to 1.78) |
| AMI | 102 | 130 | 2.3 (1.9 to 2.7) | 2.9 (2.4 to 3.4) | 174 | 229 | 1.0 | 3.9 (3.4 to 4.5) | 5.8 (5.1 to 6.6) | 1.98 (1.60 to 2.46) |
| With hypocalcemia | 83 | 98 | 1.9 (1.5 to 2.3) | 2.2 (1.8 to 2.6) | 942 | 1486 | 1.0 | 21.2 (20.0 to 22.4) | 37.7 (35.8 to 39.6) | 17.05 (13.90 to 20.92) |
| Total outpatient visits | ||||||||||
| Total ED/observation | 3309 | 13,941 | 74.6 (73.3 to 75.9) | 314.3 (309.1 to 319.6) | 3408 | 14,916 | 1.0 | 76.8 (75.6 to 78.1) | 378.3 (372.2 to 384.3) | 1.20 (1.17 to 1.23) |
| ED/observation with hypocalcemia | 84 | 106 | 1.9 (1.5 to 2.3) | 2.4 (1.9 to 2.8) | 1072 | 1926 | 1.0 | 24.2 (22.8 to 25.4) | 48.8 (46.7 to 51.0) | 20.44 (16.81 to 24.85) |
| Outpatient/physician with hypocalcemia | 30 | 31 | 0.7 (0.4 to 0.9) | 0.7 (0.5 to 0.9) | 234 | 469 | 1.0 | 5.3 (4.6 to 5.9) | 11.9 (10.8 to 13.0) | 17.02 (11.83 to 24.48) |
ICU, intensive care unit; CHF, congestive heart failur; AMI, acute myocardial infarction; ED, emergency department; 95% CI, 95% confidence interval.