Table 2.

Unadjusted and adjusted outcomes in different age-groups.

Age in years	<50	50–64	65–74	≥75
Number of patients	474	1012	716	440
In-hospital postoperative complications
Total events (%)	22 (4.6)	29 (2.9)	30 (4.2)	30 (6.8)
unadj. analysis, OR (95% CI), P-value	Ref.	0.61 (0.35–1.07), 0.083	0.90 (0.51–1.58), 0.709	1.50 (0.85–2.65), 0.158
adj. analysisa, OR (95% CI), P-value	Ref.	0.51 (0.28–0.92), 0.026	0.72 (0.39–1.33), 0.295	1.03 (0.54–1.95), 0.936
ICU admissions
Total events (%)	9 (1.9)	17 (1.7)	15 (2.1)	16 (3.6)
unadj. analysis, OR (95% CI), P-value	Ref.	0.88 (0.39–2.00), 0.764	1.11 (0.48–2.55), 0.814	1.95 (0.85–4.46), 0.114
adj. analysisa, OR (95% CI), P-value	Ref.	0.91 (0.39–2.14), 0.832	1.06 (0.43–2.63), 0.894	1.48 (0.58–3.74), 0.413
Unplanned all-cause 30-day-readmissions
Total events (%)	9 (1.9)	22 (2.2)	19 (2.7)	21 (4.8)
unadj. analysis, OR (95% CI), P-value	Ref.	1.15 (0.52–2.51), 0.73	1.41 (0.63–3.14), 0.402	2.59 (1.17–5.71), 0.019
adj. analysisa, OR (95% CI), P-value	Ref.	1.02 (0.45–2.28), 0.971	1.20 (0.51–2.82), 0.68	1.94 (0.81–4.61), 0.136
Length of hospital stay > 3 days
Total events (%)	50 (10.6)	114 (11.3)	107 (14.9)	125 (28.4)
unadj. analysis, OR (95% CI), P-value	Ref.	1.08 (0.76–1.53), 0.681	1.49 (1.04–2.13), 0.029	3.37 (2.35–4.82), <0.001
adj. analysisa, OR (95% CI), P-value	Ref.	0.98 (0.67–1.43), 0.906	1.17 (0.78–1.75), 0.448	2.38 (1.57–3.60), <0.001

^aAdjusted for gender, nationality, insurance status, date and type of admission, hospital size and teaching level, comorbidities, Charlson Comorbidity Index, Vitamin D deficiency and the presence of an end organ sequelae associated with primary hyperparathyroidism (osteoporosis, urolithiasis and/or renal insufficiency).

adj., adjusted; OR, odds ratio; Ref., reference; unadj., unadjusted.