MON-164 Determinants of Quality of Life in Primary and Secondary Adrenal Insufficiency from Two Large Tertiary Care Centers in the United States

Background: Patients with primary adrenal insufficiency (PAI) and secondary adrenal insufficiency (SAI) report impaired quality of life. Predictors of adverse outcomes include duration of disease, supraphysiologic glucocorticoid (GC) use, and presence of other comorbidities. There is limited evidence to suggest that quality of life is disproportionately affected in one subtype of adrenal insufficiency. Objective: To identify determinants of quality of life in patients with PAI vs SAI. Method: Survey study of patients with the diagnosis of AI between 2015 and 2019 was evaluated at two large tertiary medical centers in the United States. Collected variables included data on circumstances of AI diagnosis, symptoms, management, burden of disease, and overall well-being. Patients with AI due to exogenous glucocorticoid use were excluded. Results: Patients with PAI (n=310, 65% women) were diagnosed at a younger age (37 ± 19 vs 48 ± 16 years, p<.01) than patients with SAI (n=255, 57% women). Patients with SAI were more likely not to understand their diagnosis (13% vs 4% in PAI, p<.01), or to report a discordant diagnosis (16% vs 9% in PAI, p=.02). Patients with PAI were on a higher dose of daily GC (23.8 mg vs 18.5 mg hydrocortisone (HC) equivalent, p <.01), with higher number of patients on HC> 25 mg/day (33% vs 15%, p<.01). Patients with PAI reported a higher compliance with wearing medical alert ID (79% vs 64%, p=.01) and higher availability of injectable GC (74% vs 58%, p<.01). Patients with PAI reported a higher frequency of at least one adrenal crisis within the last 12 months that required self- injectable GC (32% vs 16%, p<.01), or prompted ER visits (56% vs 29%, p<.01) compared to those with SAI. Nevertheless, patients with PAI were more likely to report good general health (78% vs 65% in SAI, p<.01). When adjusted for current age, sex, duration of disease, supraphysiologic GC use, number of current symptoms and recent adrenal crises, patients with SAI had HR of 2.6 (CI 95% 1.5-4.3) for poor health, 1.6 (CI 95% 0.95-2.8) for physical limitations, 1.7 (CI 95% 1.1-2.7) for fatigue, and 2.7 (CI 95% 1.5-4.9) for social limitations compared to those with PAI. Conclusions: Patients with PAI receive higher daily GC and experience a higher number of adrenal crises when compared to patients with SAI. However, patients with PAI report a better general perception of health, possibly due to a more robust knowledge of their disease and higher comfort level managing AI. More effort is needed to ensure patients with AI are appropriately educated regarding their medical condition and therapy.