Table 4.

Profiles of Neck Pain and Headache Across Clusters and Adjusted Cluster Differences^{^a}

↵^a CI=confidence interval, IQR=interquartile ratio, OR=odds ratio, ref=reference value.
^b Binary logistic regression; OR is interpreted as the proportional increase in the odds of having pain or headaches.
^c Adjusted for sex.
^d Adjusted for sex, height, weight, exercise frequency, and depression.