Waardenburg syndrome (WS) is an autosomal dominant disease, characterized by dystopia canthorum, hyperplasia of the eyebrows, heterochromia iridis, white forelock, and congenital sensori-neural hearing loss (SNHL). The aim of this study was to evaluate the outcome of cochlear implantation in children with WS and compare it with children with pure SNHL. In a prospective study we evaluated 336 cochlear implanted children from 2008 to 2010. The WS was diagnosed by its established criteria and for control group children without any dysmorphic features, anatomical, behavioral, and developmental disorders were also enrolled. We evaluated children of both groups 1 year after cochlear implantation by categories of auditory performance (CAP) and speech intelligibility rating (SIR) tests. Eighty-one children out of the total 336 who had SNHL were included in study. Out of these 75 (22.3%) were healthy and six (1.78%) had WS. Of the 75 healthy children 40 (53.3%) were girls, while of the six children with WS, three (50%) were girls. There was a significant difference in SIR between WS and cases with pure SNHL (2.67 ± 1.03 vs. 3.79 ± 1.11, p = 021) however, the difference was not significant in CAP (4 ± 1.26 vs. 5.13 ± 1.13, p = 0.082). Prevalence of WS was 1.78% at Baqiyatallah Cochlear Implant Center. One year after implantation there was no significant difference in auditory outcome; however, the difference in speech outcome was significant between WS and cases with pure SNHL.

Education is one of the basic necessities of every person which is accepted by the United Nations as one of the basic rights of the individual male and female. Gender differences in educational achievements have long been the focus of researches. Several studies have reported that female students outperform their male counterparts. The purpose of this study is to identify the percentage of intelligence level between male and female based on their exam score taking. The sample size estimation was created on the consecutive sampling where all cases are accessible in a given period of time. In a cross-sectional study out of a total of 610 students of the Dentistry Department of Kabul University of Medical Sciences which is one of the top public universities in Afghanistan, 278 were males and 332 females. The results of final exams of fall semester 2019 of Dentistry Department have been collected, then the percentage of each class have been calculated separately to find out which gender group is due to be among top ten students in each class. And in addition we have calculated how many students of both gender show above 80 percent. Two Sample T Test and Ms. excel were used for statistical analysis. This research showed that the numbers of Female students are more in top ten than male students in each class of Dentistry Department. We can accomplish that female students are more hardworking compared to male students.