Variable Frequency Percentage (%)
Goiter  results from iodine deficiency 
       Yes                                 472 92
       No 41 8
Regular consumption of iodized salt prevents iodine deficiency in the body
        Yes 344 67.2
        No                         168 32.8
Knowledge on IDD and use of iodized salt
       Good                              443 86.4
       Poor 70 13.6
Source of Information on IDD and Prevention
      Television 298 58.1
      Radio             61  11.9
      Others 154          30
Table 3: Knowledge on iodine deficiency disoreder and in Asella town January 2015.