Table 2.

Risk factors of ACS development in NFAIs (n = 305).

Variable	HR (95% CI), p Value
Female sex	0.56 (0.24, 1.28); p = 0.155
Age at diagnosis (years)	1.04 * (1.00, 1.08); p = 0.065
ACS related comorbidities	1.42 (0.54, 3.75); p = 0.464
1mg DST (µg/dL)	6.44 * (1.88, 22.05); p = 0.001
UFC (µg/24 h)	1.00 * (0.98, 1.03); p = 0.609
ACTH (pg/mL)	0.99 * (0.94, 1.04); p = 0.664
DHEAS (µg/dL)	1.00 * (1.00, 1.00); p = 0.897
Tumour size (mm)	0.99 * (0.93, 1.04); p = 0.627
Bilaterality	1.35 (0.51, 3.56); p = 0.560

DST = dexamethasone suppression test; DHEAS = dehydroepiandrosterone-sulphate; UFC = urinary free cortisol. * Per each increased unit.