Table 1.

Comparison between serum levels of interleukin-17 and Interleukin-23, before and after narrow band UVB among groups I and II patients.

Interleukins	Group I (number = 15)			Group II (number = 15)
	Before treatment	After treatment	P value	Before treatment	After treatment	P value
IL-17 ng/L	2.0 ± 1.5	1.3 ± 1.2	0.041	2.2 ± 0.6	1.1 ± 0.5	<0.001†
IL-23 ng/L	499.1 ± 207.1	281.7 ± 214.1	<0.001†	440.9 ± 193.8	276.0 ± 179.3	0.022†

^†A significant difference by paired samples t-test.