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. 2018 Jun 26;8:9694. doi: 10.1038/s41598-018-28141-2

Figure 1.

Figure 1

Smoothing functions for the relationship between working hours and overwork-related CCVD by severity outcome, adjusted for criteria implementation, average monthly salary, unemployment rate, time, and a random intercept. The dashed line indicates relative risk (RR) equal to 1. Shaded symbols indicate RRs that are significantly greater than 1; unshaded symbols indicate RRs that are not significantly greater than 1.