BACKGROUND: Since the outbreak of COVID-19 pandemic, clinical data from various parts of the world have been reported . Up till now, there has been no clinical data with regards to COVID-19 from Bosnia and Herzegovina (B & H). The aim was to report on the first cohort of patients from B & H and to analyze factors that influence COVID-19 patient's length of hospitalization (LOH).
METHODS: This retrospective cohort study was conducted at Tuzla University Clinical Center (UKC), B & H . It involved 25 COVID-19 positive patients that needed hospitalisation between March 28th and April 27th 2020 . The LOH was measured from the time of admission to discharge . Factors analyzed induced age, BMI, presence of known comorbidities, serum creatinine and O2 saturation upon admission .
RESULTS: The mean age was 52.92 ± 19.15 years and BMI 28.80 ± 4.22 . LOH for patients with BMI <25 was 9 ± SE2.646 days (CI 95% 3.814-14.816) vs 14.182 ± SE .937 (CI 95% 12.346-16.018 p <0.05; HR 5.148 CI95% 1.217 to 21.772 p = 0.026) for & #8805; 25 BMI . The mean LOH of patients with normal levels of O2 & #8805; 95% was 11.667 ± SE1.202 (CI95% 8.261 to 13.739; p = 0.046), while LOH for patients with <95% was 14.625 ± SE 1.231 CI95% 12.184 to 16.757 p = 0.042; HR 3.732 CI95% 1.137-12.251 p = 0.03). Patients without known comorbidities had a mean LOH of 11.700 ± SE1.075 (CI 95% 9.592-13.808), while those with comorbidities had a mean of 14.8 ± 1.303 (CI 95% 12.247-17.353; p = 0.029) with HR2.552 .
CONCLUSION: LOH varied among COVID-19 patients and was prolonged when analyzed for BMI & #8805; 25, comorbidities, elevated creatinine, and O2 saturation <95% . Furthermore, risk factors for COVID-19 patients in B & H do not deviate from those reported in other countries.