Length of Hospital Stay of COVID-19 Patients managed at the Lagos State Isolation Centres during the First Wave of the Pandemic.

Background: Lagos State has the highest number of COVID-19 cases in Nigeria. We assessed the factors predicting the length of hospital stay of COVID-19 patients admitted in 15 isolation centres across the state.

Methods: We reviewed the electronic medical records of all COVID-19 patients admitted and discharged between February 27, 2020, and September 30, 2020. Logistic and linear regressions were used to assess factors predicting the length of hospital stay.

Results: A total of 3153 records were reviewed, of which 2623 (83.2%) met the inclusion criteria. The mean age of patients admitted was 40.5 (Sd 14.8) years. The age range was four days-97 years. A total of 1258 (48.0%) were symptomatic, while 2056 (78.4%) and 567 (21.6%) presented with mild and severe disease, respectively. Cough (22.0%), fever (17.3%) and breathlessness (12.3%) were the most common symptoms at presentation. Generally, the median length of hospital stay was 11 (IQR 9, 14) days. A total of 1609 (61.3%) had a prolonged length of hospital stay. The odds for prolonged hospital stay was higher among elderly patients (AOR 12.1 95%CI 7.6-19.4, p<0.001), male (AOR 1.2 95%CI 1.0-1.4, p=0.031) and patients with severe disease (AOR 1.3 95% CI 1.0-1.7, p=0.042). Age, hypertension and shortness of breath made the most significant contribution to predicting the length of hospital stay (P<0.05).

Conclusion: Age, gender, hypertension and breathlessness predicted the length of hospital stay. Proactive measures should be instituted in managing COVID-19 patients.