Table 1.

Analysis of clinical treatment efficacy using attrition combined with ALA-PDT vs. single ALA-PDT treatment.

	N	Complete remission	Partial remission	Ineffective	Overall effective rate (%)
Control	30	6	8	16	46.7
Stage II	11	3	4	4	63.6
Stage III	9	2	2	5	44.4
Stage IV	10	1	2	7	30.0
Experimental	30	17	5	8	73.3*
Stage II	12	8	2	2	83.3*
Stage III	8	5	1	2	75.0*
Stage IV	10	4	2	4	60.0*

^*p<0.05 compared to control group at the same stage.