Table 2.

Demographics of study sample (continuous variables)

Variable	Min	Max	Mean	SD	Median	IQR
Age (years)	20	79	51.69	13.543	51.00	43.0–62.0
Symptom total duration (months)	1	480	138.94	128.778	108.00	28.5–240
Current episode duration (months)	1	408	39.54	72.880	10.00	4.0–36.0
Body mass index (kilogram/meter2)	18.75	58.39	28.84	6.718	27.32	24.4–31.6

Abbreviations: Min, minimum; Max, maximum; SD, standard deviation; IQR, interquartile range.