Plantar wart cost-effectiveness of therapy

Overview
A 2006 study assessed the effects of different local treatments for cutaneous, non-genital warts in healthy people. The study reviewed 60 randomized clinical trials dating up to March 2005. The main findings were:
 * overall there is a lack of evidence (many trials were excluded because of poor methodology and reporting).
 * the average cure rate using a placebo was 27% after an average period of 15 weeks.
 * the best treatments are those containing salicylic acid. They are clearly better than placebo.
 * there is surprisingly little evidence for the absolute efficacy of cryotherapy.
 * two trials comparing salicylic acid and cryotherapy showed no significant difference in efficacy.
 * one trial comparing salicylic acid and duct tape occlusion therapy showed no significant difference in efficacy.
 * evidence for the efficacy of the remaining treatments was limited.