Variable COR (95% C.I) AOR (95% C.I) 
Sex of the Student
male 1 1
Female 1.96 (1.19,3.22) 2.47(1.38,4.43)*
Residence
Sawala town 1 1
Rural area 3.09 (1.81,5.29) 2.07 (1.11,3.86)*
Cassava Consumption
Don’t Consume at all 1 1
Consume 3.02 (1.68,5.42) 2.92 (1.52,5.62)*
Cabbage consumption
Don’t consume at all 1 1
Consume 2.08 (1.10,3.92) 2.46 (1.17,5.13)*
Source of drinking water
Use only tap water source 1 1
Use other than tap water source (s) 4.96 (2.93,8.41) 3.76 (2.07,6.85)*
Parent’s knowledge about prevention of IDDs
Don’t have knowledge 1.98 (1.06,3.67) 2.10 (1.03,4.27)
Have knowledge 1 1
*shows variables that are statistically significant with p<0.05.
Table 3: Bivariate and multivariate logistic regression analysis of factors independently associated with goiter among Botre Elementary and Junior Secondary School students, south Ethiopia, March 2014.