| Methods |
Study design: randomised, prospective, double‐blind trial Setting/location: Walter Reed Army Medical Center (WRAMC) in Washington Study period: 24 months (2004‐6) Sample size calculation: a sample size of 27 participants per treatment group was planned, assuming a 73% cure rate for ThermoMed (TM), 99% for SSG, controlling for a probability of a type I error at alpha = 0.05 and was predicted to have 80% power to determine a 26% difference in outcome. |
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| Participants |
Type of Leishmania: L major Inclusion criteria: eligible participants were Department of Defense healthcare beneficiaries with parasitologically confirmed cutaneous leishmaniasis. At Walter Reed Army Medical Center (WRAMC) in Washington. All participants were likely infected in Iraq or Kuwait. All were treatment naive. Exclusion criteria: 20 lesions; pregnancy, lactation; hypersensitivity to pentavalent antimonials or local anaesthetic; serious medical illness; lesion in proximity to mucous membranes, face, or cartilage; implanted metallic devices; unwillingness to avoid procreation for at least 2 months N randomised: 56, IVSSG: 28. Localised TM device heat treatment: 28 Participants with clinical failure at 2 months were offered cross‐over treatment. Afer 2 months: SSG: 29 (−1, +3), TM: 25 (−3, +1). Withdrawals: 2. TM: 1 (lesion not amenable to heat), SSG: 1 (not confirmed L major) N assessed: 54 (96.43%) completed treatment: TM: 27 (96.43%), SSG: 27 (96.43%). 53 (94.64%) completed 12 months follow‐up: TM: 27 (96.43%), SSG: 26 (92.86%) Median age (range): TM: 25 years (20‐53); SSG: 24 years (18‐57) Sex: TM: males: 28 (100%), SSG: males: 27 (96%), females: 1 (4%) Baseline data:
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| Interventions |
Type of interventions:
Duration of intervention: TM: 1 session. SSG: 10 days. Co‐interventions: participants randomised to thermotherapy received oral antibiotics for secondary bacterial infections of the leishmaniasis lesion(s) prior to treatment. SSG arm participants were treated concurrently with antibiotics. Follow‐up: 2, 6, and 12–24 months post‐treatment. |
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| Outcomes |
Clinical cure of the lesions: clinical cure was defined as complete epithelialisation or visually healed at 2 ± 1 month after completion of therapy and no reactivation in 12 months after the start of treatment. Clinical failure was less than complete epithelialisation or visually not healed at 2 ± 1 month after treatment completion. Relapse failure was defined as skin lesion persistence at the treatment site or elsewhere in the period up to 12 months after start of therapy, regardless of appearance at 2 ± 1 month after treatment completion Laboratory cure of the lesions: microbiological cure: they looked for an eradication of the infection Time to healing: survival analysis of time to healing for the 2 treatment arms Adverse effects: toxicity profile Time points reported: 2, 6, 12 months. Toxicity profile: daily physician evaluations |
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| Notes |
Study funding sources: this trial was supported by Walter Reed Army Medical Center, The North Atlantic Regional Medical Command, and the US Army Medical and Materiel Development Agency. Possible conflicts of interest: the authors have declared that no competing interests exist |
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| Risk of bias | ||
| Bias | Authors' judgement | Support for judgement |
| Random sequence generation (selection bias) | Low risk | The statistician (RH) generated the randomisation plan in blocks of 4 subjects using www.randomization.com. The research pharmacist made assignments using the randomisation plan in sequential order. |
| Allocation concealment (selection bias) | Low risk | The allocation sequence was unavailable to investigators until completion of the trial |
| Blinding of participants and personnel (performance bias) All outcomes | High risk | Not blinded |
| Blinding of outcome assessment (detection bias) All outcomes | Low risk | Sequential photographs were independently assessed by blinded leishmaniasis experts, who were clinicians experienced in the treatment of CL, with a tiebreaker assessment when needed. |
| Incomplete outcome data (attrition bias) All outcomes | Low risk | 2/56 withdrawals. An ITT analysis was performed |
| Selective reporting (reporting bias) | Low risk | Clinical Trial Registration: ClinicalTrials.gov NCT 00884377; all prespecified outcomes were reported |
| Other bias | Low risk | Other items assessed correctly reported |