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Q Do educational outreach visits to nurse practitioners improve tuberculosis detection and management of respiratory illness in primary care clinics in rural South Africa?
cluster randomised controlled trial.
blinded (patients and data collectors).
Follow up period:
1 and 4 months after intervention began.
40 large primary care clinics in Free State province, South Africa.
1999 patients ⩾15 years of age (mean age 45 y, 65% women) who had difficult breathing on presentation or in the past …
For correspondence: Dr M Zwarenstein, St Michaels Hospital, Toronto, Ontario, Canada.
Sources of funding: International Development Research Centre, Canada; Medical Research Council, South Africa; Free State Department of Health; and University of Cape Town Lung Institute.