Table 2.

Factors with a significant association with OCNF in univariate analysis (χ² test).

Variable, units	OCNF (n = 26)	Non-OCNF (n = 121)	Total	p value
CRP, mg/dl
≧15	22	11	33	≤0.001
<15	4	110	114
WBC, per μl
≧15000	15	9	24	≤0.001
<15000	11	112	123
Hb
<11.0	7	10	17	0.052
≧11.0	19	111	130
Cr, mg/dl
≧1.4	10	5	15	≤0.001
<1.4	16	116	132
GPT, IU/I
≧100	1	1	2	0.323
<100	25	120	145
GOT, IU/I
≧100	1	0	1	0.177
<100	25	121	146
Glu, mg/dl
≧200	6	8	14	0.019
<200	20	113	133
Alb, mg/dl
<3.0	8	4	12	≤0.001
≧3.0	18	117	135
Body temperature, °C
≧38.0	4	14	18	0.590
<38.0	22	107	129
Causative tooth
Mandible	13	65	78	0.730
Maxilla	13	56	69
Skin flare of cheek region
+	16	43	59	0.014
−	10	78	88
Skin flare of cervical region
+	20	28	48	≤0.001
−	6	93	99
Skin flare of precordial region
+	9	1	10	≤0.001
−	17	120	137

CRP, WBC, Cr, Glu, Alb, and skin flare region (cheek, neck, and precordial) showed significant differences between the OCNF and non-OCNF cases (p < 0.05).