Limitations and Strengths
The present study had some limitations, as well. In addition to the lack of generalizability, this study had a cross-sectional approach; then, no causal relationships could be established among variables. Moreover, polysomnograph­ic recordings were not applied due to restrictions in funding. Despite these limitations, this was the first study that evaluated the associations of the DII scores with obesity and sleep quality in young Iranian female. Moreover, we examined the Association between DII score and anthropometric variables and PSQI score using linear regression analysis and multivariable logistic regression in 3 different models.