Table 3.

Comparison of serum IGF-I levels among cases as regards disease severity degrees.

Disease severity degrees	IGF-I (ug/L)
	Case group (n = 30)
	Active acne (n = 15)		Post-acne scar (n=15)
	Mean	SD	Mean	SD
Mild	22.6	6.2	23.6	7.8
Moderate	16.8	6.1	19.2	12.7
Sever	18.5	4.7	19	0
P value	0.3		0.7
Significance	NS		NS

NS, non-significant.