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Table 2 Summary statistics – longitudinal data

From: The impact of CHIP premium increases on insurance outcomes among CHIP eligible children

   January December
   Mean St.d. N Mean St.d. N
Low premium group CHIP 0.423 0.494 926 0.42 0.494 932
  Private 0.367 0.482   0.368 0.483  
  No insurance 0.217 0.412   0.216 0.411  
  Income (% FPL) 142.75 43.27   143.03 43.35  
  Premium ($) 4.99 7.17   5.88 7.16  
  Child age 10.16 4.63   10.15 4.65  
  Health state* 3.49 1.64   3.48 1.65  
High premium group CHIP 0.33 0.47 604 0.32 0.47 598
  Private 0.575 0.495   0.577 0.494  
  No insurance 0.101 0.302   0.1 0.301  
  Income (% FPL) 191.94 27.91   192.29 27.83  
  Premium($) 10.55 7.13   11.53 7.53  
  Child age 9.88 4.99   9.84 4.98  
  Health state* 3.47 1.69   3.46 1.7  
  1. (*) - Health status is taken by the question whether the child gets sick easily where 1 stands for definitely true and 5 is for definitely not.
  2. Characteristics for children in low premium and high premium groups in 19 states with a two tier premium structure, January and December, 2003.