Factors Associated with Insomnia Symptoms in a Longitudinal Study among New York City Healthcare Workers during the COVID-19 Pandemic.

ABSTRACT

BACKGROUND: Few studies have examined the longer-term psychological impact of COVID-19 in healthcare workers (HCWs). PURPOSE: We examined the 10-week trajectory of insomnia symptoms in HCWs during the COVID-19 pandemic. METHODS: HCWs completed a web-based survey at baseline (9 April-11 May 2020) and every 2 weeks for 10 weeks. The main outcome was the severity of insomnia symptoms in the past week. Multivariable-adjusted generalized estimating equation analyses examined factors associated with insomnia symptoms. RESULTS: n = 230 completed surveys at baseline. n = 155, n = 130, n = 118, n = 95, and n = 89 completed follow-ups at weeks 2, 4, 6, 8, and 10, respectively. Prevalence of insomnia symptoms of at least moderate severity was 72.6% at baseline, and 63.2%, 44.6%, 40.7%, 34.7%, and 39.3% at weeks 2, 4, 6, 8, and 10, respectively. In multivariable analyses, factors significantly associated with increased odds of insomnia symptoms were younger age (OR 0.98, 95% CI 0.96-1.00), working in a COVID-facing environment (OR 1.75, 95% CI 1.15-2.67) and hours worked (OR 1.16, 95% CI 1.06-1.27). CONCLUSIONS: The initial high rates of insomnia symptoms improved as time passed from the peak of local COVID-19 cases but four out of ten HCWs still had moderate-to-severe insomnia symptoms ten weeks after baseline.