Table 4.

Variables selected by the LASSO logistic regression

Covariates	OR (LASSO)	OR	95% CI (OR)
Sleep (hours daily)(n=129)	1.032	1.214	0.831-1.812
Moderate physical activity (hours/week) (n=129)	0.983	0.906	0.710-1.077
MIDAS score (n=129)	1.002	1.002	0.990-1.014
MIDAS-intensity (NRS 0-10) (n=129)	1.006	1.011	0.987-1.034
MIDAS-frequency (days last 3 months) (n=129)	1.210	1.564	1.042-2.517
Neuroticism score (12-60) (n=129)	1.017	1.052	0.981-1.133
Educational level (n=129)	0.794	0.586	0.233-1.396
Contacts headache clinic (n=129)	1.010	1.068	0.916-1.237

The table shows estimated (shrunken) odds ratio for the selected variables. These are complemented by odds ratios and their 95% CI afterwards obtained from an ordinary multivariable logistic regression model using the same variables. Odds ratios correspond to the variables’ original scale