The Relationship between Caesarean and Neonatal Hypothyroidism in Chadegan City

Dear Editor, I have read with great interest the article titled "The Relationship between Caesarean and Neonatal Hypothyroidism in Chadegan City" by Naderi et al[۱]. Best regards and thanks to the authors, it is an interesting topic however these few points that I would entitled to highlight. First in the method section, that author mentioned the record ۸۶ cases. This is not likely to have such high number in only one year, the highest prevalence in this area is two case in ۱۰۰۰ birth. [۲, ۳] Also , it is mentioned that individual and group matching has been used, in this situation conditional logistic regression or logistic regression should be used to adjusted confounders[۴] Finally, there is inconsistency between value in the text & in the table۲ for value of control group (۱۷۶ vs ۱۲۶). According to the results of this table, the odds ratio is equal to ۰.۵۶(CI ۹۵%: ۰.۳۰-۱.۰۲), but in the results of another value was reported.