Table 3. Descriptive statistics for medical data.

		No.	Mean	S.E.
BMI		143	29.357	10.806
Missing data		20
Osteoporosis of the spine	Levels	No.	Percentage
	None	59	0.362
	Mild	65	0.399
	Severe	39	0.239
Steatosis
	None	39	0.240
	Mild	68	0.421
	Severe	53	0.339