Centre-based statistics of cleft lip with/without alveolus and palate as well as cleft palate only patients in Aden, Yemen

The prevalence rate of orofacial cleft types among this Yemeni sample was similar to prevalence rates previously reported in white Caucasians. The present study did neither find many cases with medication before, nor during, pregnancy; there were few young or very old mothers; and the incidence of positive family histories was similar to those found in other studies on clefts. However, consanguineous marriages were encountered quite often.