Strategies for integrating primary health services in middle- and low-income countries: effects on performance, costs and patient outcomes.

Integration of primary health care is change to bring together inputs, organisation, management and delivery of particular service functions. Integration has been promoted in the health sector to improve the efficiency of health care delivery. The need for integration arose from perceptions that services were fragmented when delivered through separate vertical programmes. Integration is relevant to the health system at various levels, and this review is concerned with integration at the point of delivery.