Table 2.

Demographics of study sample (continuous variables)

Variable	Min	Max	Mean	SE	Median	IQR
Age (years)	20	79	51.69	1.263	51.00	43.0–62.0
Symptom total duration (months)	1	480	138.94	12.061	108.00	28.5–240
Current episode duration (months)	1	408	39.54	6.796	10.00	4.0–36.0
Body mass index (kilogram/meter2)	18.75	58.39	28.84	0.626	27.32	24.4–31.6

Abbreviations: Min, minimum; Max, maximum; SE, standard error; IQR, interquartile range.