Figure 2

![Figure 2: Summary of included study characteristics and outcomes from the systematic review on melatonin's effectiveness for shift work sleep disorder among healthcare workers.](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9408537/bin/ijerph-19-10199-g002.jpg)

> Source: Bárbara Carriedo-Diez et al. "The Effects of the Exogenous Melatonin on Shift Work Sleep Disorder in Health Pe." *International journal of environmental research and public health*, 2022. PMID: [36011832](https://pubmed.ncbi.nlm.nih.gov/36011832/)

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  <img src="https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9408537/bin/ijerph-19-10199-g002.jpg" alt="Summary of included study characteristics and outcomes from the systematic review on melatonin's effectiveness for shift work sleep disorder among healthcare workers." />
  <figcaption>Figure 2. Summary of included study characteristics and outcomes from the systematic review on melatonin's effectiveness for shift work sleep disorder among healthcare workers.<br>  Source: Bárbara Carriedo-Diez et al. "The Effects of the Exogenous Melatonin on Shift Work Sleep Disorder in Health Pe." <em>International journal of environmental research and public health</em>, 2022. PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/36011832/">36011832</a></figcaption>
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