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Table 2 Crude (bivariate analysis) from the Cox proportional Hazards Model with time to menarche as response variable.

From: Food insecurity and age at menarche among adolescent girls in Jimma Zone Southwest Ethiopia: a longitudinal study

Covariates Crude HR (95% CI) P
Adolescent Food insecurity   
   Food secure 1.000  
   Mild food insecurity 0.906 (0.743,1.103) 0.326
   Moderate/Severe food insecurity 0.417 (0.234,0.745) 0.003
Place of Residence   
   Jimma City 1.000  
   Small Towns 0.817 (0.682,0.979) 0.028
   Rural 0.759 (0.634,0.910) 0.003
Nutritional status(Height for age z-score)   
   Normal 1.00  
   Stunted 0.546 (0.399,0.747) < 0.001
Work Index 0.994 (0.990,0.999) 0.022
Household income Tertiles   
   Low 1. 000  
   Middle 1.011 (0.834,1.126) 0.911
   High 1.264 (1.045,1.529) 0.016
Head of the household   
   Male 1.000  
   Female 1.213 (1.001,1.469) 0.049
  1. Source: Jimma Longitudinal Family Survey of Youth; Round 1, 2005-2006; Round 2, 2006-2007.
  2. Data on predictors were collected one year before the dependent variable (age at menarche).
  3. HR = Hazard Ratio.
  4. CI = Confidence Interval.