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Effectiveness of peer educators on the uptake of mobile X-ray tuberculosis screening at homeless hostels: a cluster randomised controlled trial.

Aldridge, Robert W; Hayward, Andrew C; Hemming, Sara; Possas, Lucia; Ferenando, Gloria; Garber, Elizabeth; Lipman, Marc; McHugh, Timothy D; Story, Alistair.
BMJ Open; 5(9): e008050, 2015 Sep 21.
Artigo em Inglês | MEDLINE | ID: mdl-26391630

TRIAL DESIGN:

Cluster randomised controlled trial.

OBJECTIVE:

To compare current practice for encouraging homeless people to be screened for tuberculosis on a mobile digital X-ray unit in London, UK, with the additional use of volunteer peer educators who have direct experience of tuberculosis, homelessness or both.PARTICIPANTS: 46 hostels took part in the study, with a total of 2342 residents eligible for screening. The study took place between February 2012 and October 2013 at homeless hostels in London, UK.INTERVENTION: At intervention sites, volunteer peer educators agreed to a work plan that involved moving around the hostel in conjunction with the hostel staff, and speaking to residents in order to encourage them to attend the screening.RANDOMISATION: Cluster randomisation (by hostel) was performed using an internet-based service to ensure allocation concealment, with minimisation by hostel size and historical screening uptake.BLINDING: Only the study statistician was blinded to the allocation of intervention or control arms.

PRIMARY OUTCOME:

The primary outcome was the number of eligible clients at a hostel venue screened for active pulmonary tuberculosis by the mobile X-ray unit.

RESULTS:

A total of 59 hostels were considered for eligibility and 46 were randomised. Control sites had a total of 1192 residents, with a median uptake of 45% (IQR 33-55). Intervention sites had 1150 eligible residents with a median uptake of 40% (IQR 25-61). Using Poisson regression to account for the clustered study design, hostel size and historical screening levels, there was no evidence that peer educators increased uptake (adjusted risk ratio 0.98; 95% CIs 0.80 to 1.20). The study team noted no adverse events.

CONCLUSIONS:

This study found no evidence that volunteer peer educators increased client uptake of mobile X-ray unit screening for tuberculosis. Further qualitative work should be undertaken to explore the possible ancillary benefits to peer volunteers.TRIAL REGISTRATION NUMBER: ISRCTN17270334.
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