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. Author manuscript; available in PMC: 2019 Jun 12.
Published in final edited form as: Ann Surg. 2017 Oct;266(4):632–640. doi: 10.1097/SLA.0000000000002370

Table 3.

Likelihood of referral to surgery after evaluation of calcium and PTH is less likely in older patients, male gender, and in patients with co-morbidities.

Demographics Surgical consultation
(N=609)
No surgical
consultation
(N=2,591)
p-value
Age in years (mean ± SD) 60.2 +/− 12.5 60.9 +/− 15.6 0.2842
Age Group <.0001
 1. <=35 years old 19 ( 3.1) 190 ( 7.3)
 2. 36 to 45 years old 59 ( 9.7) 183 ( 7.1)
 3. 46 to 55 years old 117 (19.2) 479 (18.5)
 4. 56 to 65 years old 195 (32.0) 712 (27.5)
 5. 66 to 75 years old 163 (26.8) 580 (22.4)
 6. 76 to 85 years old 48 ( 7.9) 345 (13.3)
 7. >85 years old 8 ( 1.3) 102 ( 3.9)
Gender <.0001
 Female 456 (74.9) 1718 (66.3)
 Male 153 (25.1) 873 (33.7)
Race/Ethnicity 0.2421
 1. White 363 (59.6) 1455 (56.2)
 2. Black 236 (38.8) 1078 (41.6)
 3. Other 10 ( 1.6) 58 ( 2.2)
Insurance 0.4647
 1. Commercial 399 (65.5) 1615 (62.3)
 2. Medicare 176 (28.9) 822 (31.7)
 3. Medicaid 25 ( 4.1) 121 ( 4.7)
 4. Other/Uninsured/Unknown 9 ( 1.5) 33 ( 1.3)
Encounter Type <.0001
 1. Outpatient 538 (88.3) 1845 (71.2)
 2. Inpatient 40 ( 6.6) 532 (20.5)
 3. ER 28 ( 4.6) 119 ( 4.6)
Any Elixhauser Comorbidity <.0001
 No 259 (42.5) 520 (20.1)
 Yes 350 (57.5) 2071 (79.9)
Kidney Stone 25 ( 4.1) 95 ( 3.7) 0.6082
Fracture 19 ( 3.1) 197 ( 7.6) <.0001
Osteoporosis 43 ( 7.1) 259 (10.0) 0.0258
Year of Index Calcium
2011 121 (19.9) 579 (22.3) 0.14
2012 122 (20.0) 496 (19.1)
2013 129 (21.2) 446 (17.2)
2014 107 (17.6) 503 (19.4)
2015 130 (21.3) 567 (21.9)