Fig. 1

Mean changes in waist circumference among (a) 20–29-year-old female nurses. (b) 30–39-year-old female nurses. *p <0.05 between day workers and shift workers
Mean changes in waist circumference among (a) 20–29-year-old female nurses. (b) 30–39-year-old female nurses. *p <0.05 between day workers and shift workers