This research in analytic case control study to compare the individual, family, and socio-economic characteristics of the enuertic and nonenuetric children in primary schools in Hamadan in 1994.

All children at primary schools have been included in this study.

In this investigation 160 enuertic children and 160 nonenuertic ones were compared.

In order to collect necessary data, the structured interview forms were used.

After analysis, the findings showed that there existed some differences in the socio-economic, family, and individual characteristics between these two groups.