Statistical analysis
neck pain
REGRESSION
Mean and standard deviation (SD) were calculated for continuous variables. Number and percentage were calculated for categorical variables. We used the Fisher exact or Chi-square tests to compare the categorical variables across groups. We used a binary logistic regression model to determine the factors independently associated with neck pain and calculated the adjusted odds ratios (AOR). We adjusted the model for BMI and gender as possible confounding factors. Missing values were excluded from the relevant analyses. P < 0.05 was considered statistically significant. We used IBM SPSS version 22 for all the analyses.