Table 4.

12-Month Healthcare Utilization Rates and 90-day Surgical Side Effect Rates

Outcome	Before PTx	After PTx	Difference	Lower CI	Upper CI
Utilization rate (per person-year)
Physician office visit	10.6	9.3	-1.3	-1.5	-1.0
Dialysis visit	147.7	142.5	-5.2	-5.9	-4.4
Hospitalization	1.2	2.5	1.4	1.3	1.5
Hospitalization days	6.7	18.8	12.1	11.2	13.0
Surgical side effect rate (per 1,000 person-years)
Hematoma or bleed	14.7	239.0	224.4	152.5	303.1
Vocal cord paralysis	13.3	138.0	124.6	59.1	232.1
Seroma	5.3	32.8	27.4	0.4	59.0
Wound infection	0.0	0.0	0.0	0.0	0.0

Note: “Before” and “After” refer to the 12-month periods before and after parathyroidectomy (PTx) for utilization, and the 90-day periods before and after PTx for surgical side effects. CI = confidence interval