HHFA questionnaires are designated as “Core”, “Core+Additional” and/or “Supplementary”. A Core questionnaire contains only core questions. A Core+Additional questionnaire contains both core and additional questions. A Supplementary questionnaire does not include questions from other HHFA questionnaires and may collect data through a different modality (e.g. record review). HHFA questionnaires are available in “stand-alone” and “combined” formats. Each of the four HHFA modules includes one or more stand-alone questionnaires that are specific to the module. Combined core questionnaires contain all the core questions from all three facility audit modules: Availability, Readiness, and Management and finance modules, or from a combination of any two of these modules. The combined questionnaires are designed to ensure streamlined data collection when integrating modules. The Service Availability, Readiness, and Management and finance modules use a facility audit data collection methodology, based on key informant interviews and observation. The Quality of Care module uses a record review methodology, based on review of a sample of individual patient records. When implementing a single HHFA module, the relevant stand-alone questionnaire is used. Within a module, EITHER the Core OR the Core+Additional questionnaire is used. (The Core+Additional includes all the questions of the Core questionnaire.) A Supplementary questionnaire can implemented alone, or along with other questionnaires. If a country chooses to implement multiple HHFA facility audit modules, the combined Core questionnaire should be used.