Fig. 5From: Patterns of salivary cortisol levels can manifest work stress in emergency care providersSimilarities in diurnal variations between mean diurnal curve and individual diurnal curves on the work day (n = 39) versus day off (n = 39). Horizontal black lines Mean value in each group, S similarity of diurnal variation, W work day, O day off, NS not significant. #Difference exceeded 3 standard deviationsBack to article page