Results of CDH13 × sleep duration interaction on ln-adiponectin and LVM index. LVM index means left ventricular mass index. X-axis represents the average sleep duration (h/day) and Y- axis represents LVM index (g/m2.7) or ln-adiponectin levels (ug/ml). Three groups of genotypes for rs4783244 are represented. Red dotted line represents the 95% confidence intervals and black line represents the regression line. The interaction p value is listed for ln-adiponectin and LVM index. P value for interaction in the liner regression model was adjusted for age, sex, CDH13 genotype, sleep duration, SBP, TG, HDL—C, FBG, HOMA-IR, BMI, smoking, total caloric intake and physical activity in A. P value was adjusted for the aforementioned covariates and ln-adiponectin levels in B.