child abuse is a serious social health problem all over the world with important adverse effects .
this is an issue concerning millions of children and families which influence significantly children of any ethnicity , color , social status and religion and encompasses all ages ( before birth , in infancy , childhood , adolescence , etc . )
this is in the range of 4.7 to 91.6% according to the type of maltreatment and place of study ( 2 - 5 ) .
relationship between child abuse and mental disorder is well known in different countries ( 6 - 9 ) .
evidence shows that child abuse and neglect are related to various disorders in adolescence , which include mental disorders , psychological and behavioral disorders , substance abuse , and poor physical health ( 10 - 14 ) . results in one review found emotional , sexual and physical child abuse as the most serious risk factors for depression . and sexual child abuse and family violence as the greatest risk factors for anxiety disorders ( 15 ) .
other studies assessed the association between childhood sexual abuse and major depression and anxiety at higher age , and found that severe forms of sexual abuse were correlated with a greater risk of outcomes ( 16 - 19 ) .
in iran , our knowledge about various effects associated with child abuse types and specific mental disorders is not sufficient . our overall objective was to extend our understanding of the relation between mental conditions including anxiety , stress and depression , and child abuse and neglect .
maybe dispelling this gap in knowledge would disclose findings that could be as an alarm for health professionals and decision makers for prevention and intervention programming aimed at reducing both child abuse and poor mental health outcomes in adolescents .
in 2013 , we conducted a cross - sectional survey in two secondary school levels ( 6th and 7th level ) in yazd province located in central iran .
of the 745 students from 25 classes eligible to participate , 700 completed the questionnaire with a response rate of 94% .
the first part of the questionnaire included 20 demographic questions . in the second part a standard
self - reported , valid and reliable ( minimum internal consistency for sexual domain  : 0.87 ) questionnaire was applied for recording child abuse information in neglect , psychological , physical and sexual domains ( 20 ) .
all questions could be answered by a 4-level scale ( never , sometimes , often and almost always ) . to score the questionnaire ,
children with positive answer to at least one question in each domain of emotional , physical and neglect were considered victims of that domain ; children with positive answers to at least one question in each domain of emotional , physical and neglect were included in the total number of child abuse victims of all domains .
another questionnaire used for measuring mental health situation among the adolescents was dass ( depression anxiety stress scales)-42 .
the dass is a 42-item self report instrument designed to measure the three related negative emotional states of depression , anxiety and tension / stress in adolescents .
dass is made up of 42 self - report items to be completed over five to ten minutes , each reflecting a negative emotional symptom .
each of these is rated on a four - point likert scale of frequency or severity of the participant s experiences over the last week with the intention of emphasizing states over traits .
these scores ranged from 0 , meaning that the subject believed the item  did not apply to him at all  , to 3 , meaning that the subject considered the item to  apply to him very much , or most of the time  (
21 ) . in iran validity and reliability of dass-42 questionnaire were assessed ( 22 ) .
correlation coefficient with beck anxiety inventory and beck depression inventory was 0.81 and 0.74 and alpha coefficient for depression , anxiety and stress 0.94 , 0.85 and 0.87 respectively ( 23 ) .
adolescents with scores less than 9 , 7 and 14 for depression , anxiety and stress were considered as normal by coding zero in dependent outcome , and the other scores as faced with mental disorders by coding one in logistic regression model .
mental health and child abuse questionnaire score could vary from 0 to 126 , and 38 to 152 respectively . in both of them
the collected data was analyzed using spss software and chi - square test , independent t - test and logistic regression analysis . in order to identify predicting factors for mental disorders in students ,
each variable was entered separately , and in the last step for multivariate analyses , those variables were entered which were significant in the univariate analyses to find the set of best predictors of mental disorders in adolescents using forward conditional model . considering the importance of the issue and the necessity of taking students satisfaction and trust to cooperate honestly in responding to the questions , at first , nature and purpose of the questionnaire were clarified for students and anonymity was also emphasized .
of the 700 respondents aged 12 to 18 years ( mean 13.3 years ; sd 0.9 ) , 57% were females . the majority ( 92.8% ) of students
did not have another job and few ( 3.8% ) of them said they used alcohol or drug . among the adolescents 6.5% were single child in the family whereas 40.7% , 21.7% and 31.1% were first ,
mean mental disorder score was 30.824.1 ( range : 0 - 119 ) and it was 56.1  6.5 ( range : 38 - 81 ) for child abuse . there was a statically significant correlation between mental disorder and child abuse score ( spearman rho : correlation coefficient = 0.2 ; p - value < 0.001 ) ( figure 1 ) .
the highest correlation between mental disorders and child abuse was found in psychological domain , spearman s rho coefficients were 0.46 , 0.41 and 0.36 for depression , anxiety and stress respectively ( p - value < 0.001 ) .
other coefficients for correlation between mental disorder ( i.e. depression , anxiety and stress ) and four domains of child abuse are shown in table 2 .  
p value < 0.001 for all correlations . among adolescents with experience of at least one type of child abuse , suffering from some degree of depression was 45.3% vs 6.8 % in adolescents without it .
there were statically significant relationships between severity of different types of mental disorders and experience of at least one type of child abuse ( chi square : p - value < 0.001 ) ( table 3 ) .  
chi square : p value < 0.001 . based on the results of simple logistic regression for mental disorder , related variables including type of school ( governmental / non profit ) , sex , birth order ,
student s or parent s substance abuse and parents living situation in model 1 and four domains of disorders ( all p < 0.05 ) , were candidates to enter in the multivariate analysis in two models .
however , of the above mentioned variables , sex , birth order , parent s substance abuse in model1 and neglect severity , emotional abuse severity and having experience of sexual abuse ( all p < 0.05 ) in model 2 , were significant in the multivariate analysis . based on these results , females , last born adolescents and subjects with parental drug or alcohol abuse had mental disorder odds of 3 , 0.4 and 1.9 times compared to others .
odds of mental disorder for students with child abuse and neglect in various severities are shown in table 4 .
model.1 : hosmer and lemeshow test : chi square ( 6 ) = 1.4 , p - value = 0.96 ; a total of 76.8% of subjects were correctly classified
.   model.2 : hosmer and lemeshow test : chi square ( 7 ) = 6.3 , p - value = 0.5 ; a total of 78.8% of subjects were correctly classified .
93.5% of the adolescents had experienced at least one type of neglect , psychological , physical and sexual abuse ranging mild to severe .
all 4 types of child abuse and neglect were associated with all types of mental disorders including depression , anxiety and stress .
the current findings are also consistent with other studies that found relations with specific types of child abuse and mental conditions ( 6 , 24 - 30 ) , although relationship between assessment of child abuse and mental disorders is not directly comparable because of diversity in instruments or methods .
a review from canada reported that all types of abuse are damaging to children physically , emotionally , and psychologically and can cause long - term difficulties with behavior and mental health development ( 6 ) . in a population - based survey of 1000 children and adolescents aged 10 - 17 years in the usa ,
a linear relationship between multiple victimization and other childhood disorders as well as adolescent depression and anger / aggression was shown ( 31 ) . in the present study
the highest correlation scores for all mental disorders ( depression , anxiety and stress ) were found in psychological domain . in a prospective cohort study childhood neglect
another study emphasized the effect of sexual abuse on depression and chronic pain in adulthood and revealed that the more severe the abuse , the stronger was the association with poor outcomes in adulthood ( 32 ) .
our results similarly showed a dose - dependent relationship between psychological abuse with mental disorders so that the severe type predicted mental disorders 30 times more than the mild kind in logistic regression model . in the model other variables including sex ,
birth order and drug or alcohol abuse by parents were considered as predictors of mental disorders .
the finding was similar to the results of other studies on iranian adolescents which showed that mental disorders , in particular depression and anxiety , were more prevalent in females ( 33 , 34 ) . among siblings ,
the lowest rank position appeared to be a protective factor against the development of mental disorders .
many studies showed that a higher rank position in the birth order was positively associated with higher risk ( 35 ) .
one study concluded that being the middle child and living with both biological parents appeared to be protective factor against the development of emotional disorders or attention deficit hyperactivity disorders ( adhd ) ( 36 ) .
we found that alcohol and/or substance abuse by parents predicted depression , anxiety and stress symptoms in adolescents .
this result is parallel with a lot of studies which mentioned the effect of parental addiction on psychological , emotional and behavioral disorders on children ( 37 - 39 ) .
our findings show that 93.5% of the adolescents in yazd , iran have experienced at least one mild type of child abuse and neglect and that child abuse has strong relationship with mental conditions .
generally child abuse is an important public health disorder in iran as well as other parts of the world .
it is notable that in some societies child abuse and neglect is perceived in terms of very harsh physical assault and sometimes this behavior is considered necessary for punishment of the child ( 40 ) .
so awareness of health care providers about child abuse and its association with mental disorders is needed .
child abuse should be considered and explored by psychologists who encounter adolescents with mental disorders ( i.e. , depression , anxiety and stress ) .
mandatory reporting of child abuse by all care givers e.g. those attending schools , in order to prevent or reduce its detrimental effects , is useful .
in addition , success in preventing child abuse could lead to reductions in the prevalence of mental disorders . in the present study
however , the data from this study were cross - sectional and retrospective in nature .
it is probable that some reported types of abuse especially emotional and neglect were due to some mental disorders like depression .
moreover many other important mental disorders ( e.g. , personality disorders ) could be included in the study .
our findings show that 93.5% of the adolescents in yazd , iran have experienced at least one mild type of child abuse and neglect and that child abuse has strong relationship with mental conditions .
generally child abuse is an important public health disorder in iran as well as other parts of the world .
it is notable that in some societies child abuse and neglect is perceived in terms of very harsh physical assault and sometimes this behavior is considered necessary for punishment of the child ( 40 ) .
so awareness of health care providers about child abuse and its association with mental disorders is needed .
child abuse should be considered and explored by psychologists who encounter adolescents with mental disorders ( i.e. , depression , anxiety and stress ) .
mandatory reporting of child abuse by all care givers e.g. those attending schools , in order to prevent or reduce its detrimental effects , is useful .
in addition , success in preventing child abuse could lead to reductions in the prevalence of mental disorders .
in the present study several types of child abuse and mental conditions were assessed . however , the data from this study were cross - sectional and retrospective in nature .
it is probable that some reported types of abuse especially emotional and neglect were due to some mental disorders like depression .
moreover many other important mental disorders ( e.g. , personality disorders ) could be included in the study .
 backgroundchild abuse is a serious social health problem all over the world with important adverse effects.objectivesthe aim of this study was to extend our understanding of the relation between mental disorders and child abuse.materials and methodsthe study was designed as a cross - sectional survey on 700 students in secondary schools using multiple cluster sampling in yazd , iran in 2013 . 
 we applied 2 self reported questionnaires : dass ( depression anxiety stress scales)-42 for assessing mental disorders ( anxiety , stress and depression ) and a standard self - reported valid and reliable questionnaire for recording child abuse information in neglect , psychological , physical and sexual domains . 
 the collected data was analyzed using spss software . 
 p - values < 0.05 were considered as significant.resultsthere was a statically significant correlation between mental disorder and child abuse score ( spearman rho : 0.2 ; p - value < 0.001 ) . 
 the highest correlations between mental disorders and child abuse were found in psychological domain , spearman s rho coefficients were 0.46 , 0.41 and 0.36 for depression , anxiety and stress respectively ( p - value < 0.001 ) . based on the results of logistic regression for mental disorder , females , last born adolescents and subjects with drug or alcohol abuser parents had mental disorder odds of 3 , 0.4 and 1.9 times compared to others ; and severe psychological abuse , being severely neglected and having sexual abuse had odds 90 , 1.6 and 1.5 respectively in another model.conclusionsprogramming for mandatory reporting of child abuse by physicians and all health care givers e.g. those attending schools or health centers , in order to prevent or reduce its detrimental effects is useful and success in preventing child abuse could lead to reductions in the prevalence of mental disorders . 
1. Introduction
2. Objectives
3. Materials and Methods
4. Results
5. Discussion
5.1. Conclusion
5.2. Strengths and Limitations