We received 100% response rates from hospitals and district health offices in Cambodia. Overall response rates from district health offices were more than 95% in Viet Nam and Indonesia (Jakarta and Bali), 86% in Lao PDR, 72% in Taiwan, and 59% in Thailand. The response rates for hospital questionnaires were slightly lower at 93% for Indonesia and Vietnam, 70% for Lao PDR, and approximately 46% for Thailand and Taiwan. Data from the questionnaires were double-entered into an Excel database. Missing values, due to non-responses or incomplete questionnaires, were extrapolated using linear prediction models, specific to each country and resource item, based on a number of district characteristics such as total number of hospital beds or public hospital beds, population size, and geographic location (region/province). For oseltamivir and ventilators, two-step models were used to first estimate the likelihood of having any oseltamivir or ventilators, and then to predict the number of these items. Extrapolation of missing data was carried out in STATA version 11.