Author's response to reviews Title: Child sexual abuse in southern Brazil and associated factors: a population-based study Authors:

Background: The second sentence currently reads: “The negative consequences – physical and emotional of childhood sexual abuse are broad and pervasive, including increased risk factor of developing psychiatric disorders”. Although I understand the point, the latter part (including...) does not grammatically relate correctly with the first part. More correct would be to state simply “including increased risks of developing psychiatric disorders”. The sentence has been corrected and now reads as: “The negative consequences – physical and emotional of childhood sexual abuse are broad and pervasive, including increased risks of developing psychiatric disorders.” Abstract Methods: First sentence now reads “A two-stage sampling strategy was used to generate representative populationbased estimates”. Enough to say “population estimates” instead of “population-based estimates”. We accept the reviewer’s suggestion. The sentence now reads as: “A two-stage sampling strategy was used to generate representative population estimates.”Methods: First sentence now reads “A two-stage sampling strategy was used to generate representative populationbased estimates”. Enough to say “population estimates” instead of “population-based estimates”. We accept the reviewer’s suggestion. The sentence now reads as: “A two-stage sampling strategy was used to generate representative population estimates.” The meaning of the acronym “CSA” is not clear in the abstract. It would suffice to state this in the first sentence after “child sexual abuse” (CSA). The acronym (CSA) is now stated in the first sentence of the abstract. Abstract Results: Authors should use past tense in their reporting of results. The sentence “Boys experienced CSA at younger ages..” “ages” should be “age”Results: Authors should use past tense in their reporting of results. The sentence “Boys experienced CSA at younger ages..” “ages” should be “age” and “than girls” should be added in the end of this sentence. The Abstract Results section has been modified accordingly to incorporate the reviewer’s suggestions. Abstract Conclusion: The first sentence currently sounds: “Results suggest that CSA happens at young ages and is associated with physical violence, making it likely to have serious health and developmental consequences”. I would suggest theConclusion: The first sentence currently sounds: “Results suggest that CSA happens at young ages and is associated with physical violence, making it likely to have serious health and developmental consequences”. I would suggest the change: “Results suggest that CSA takes place among young age groups and is associated with physical violence, making it more likely to have serious health and developmental consequences”. We have used the wording suggested by the reviewer, therefore, the sentence now reads as: “Results suggest that CSA takes place among young age groups and is associated with physical violence, making it more likely to have serious health and developmental consequences”.