Variables Pearson correlation (r) P-value Daily Walking -0.15 0.008 Physical Exercise 0.039 0.52 Time spends sitting in a day -0.25 0.000 Duration of sleeping -0.13 0.03 Waist circumference 0.07 0.23 BMI -0.05 0.33 Waist to hip ratio -0.003 0.96 Height 0.09 0.11 Weight 0.035 0.55 Hip circumference -0.01 0.85

Table 4:The Pearson correlation test between age at menarche and other quantitative variables among High-School Female Students in Mekelle city February, 2013.