本研究在探討醫師採用不同世代產品行為受到醫院背景、個人因素及病患之影響，以全民健康保險資料庫進行大樣本迴歸分析，分析自中央健康保險局納入給付後醫師採用心臟支架的情形，並對醫師首次採用時間早晚進行研究分析。本研究以兩世代產品採用差異發掘創新擴散各階段醫師採用心臟支架的影響變數，並分為醫院-醫師-病患三個層次來做整體考量。實證結果顯示，從醫療院所的層級或權屬看來，醫院層級對醫師採用早晚無顯著影響，而私立醫院的醫師較早採用第二代產品。另外，在醫師個人特質方面，年齡越大的醫師越早採用產品，資深醫師會較晚採用第一代產品，而女性醫師也會較晚採用第一代產品。從病患影響的角度來看，醫師所遇到的病人願意自付比例高者，採用時間越早。而兩世代採用時間早晚也具相關性，越早採用第一代產品，也會越早採用第二代產品。 / The purpose of this research is to investigate the decision determinants of physician’s innovation adoption of multi-generations products. Based on the National Health Insurance database, this study focuses on analyzing the physician’s adoption time on coronary stent to verify the hypothetical determinants from hospital - physician - patient levels. The empirical results show that the academic level is not associated with physician’s innovation adoption time. Physician in private hospital is likely to adopt the second generation product earlier. In addition, physician’s personal characteristics- age, work experience and gender also have significant impacts upon physician’s adoption time. Elder physician will be early adopters of innovation products, and senior or female physician will be the late adopters of first-generation products. As to the influence of patients, if the physician’s patients are more willing to pay, the physician will adopt product earlier. Besides, the two generations have positive correlation, the earlier adopter in first-generation products will also adopt second-generation product earlier.