It outlines their strengths and weaknesses and addresses how they can be improved for use in health planning and policymaking as well as towards effective and cost-efficient health intervention programmes.
它概述了这些数据来源的强项和弱项，并且阐明了如何能改进这些数据，供卫生规划和决策使用，并提高卫生干预方案的效用和成本效益。