妊娠婦女接受產前檢查是促進新生兒健康的重要投入，以目前的醫療水準來看，許多新生兒疾病是可以早期發現早期治療的，對於醫療支出龐大的臺灣而言，如何達成醫療資源配置效率，同時提升國民健康水準，實為刻不容緩的任務。若能有效預防早產發生，不僅能提升國人健康素質，更能節省社會醫療資源，此為本文探討產前檢查是否能降低懷孕風險之目的。2003年SARS疫情爆發改變國人醫療利用行為引發本文探討產前檢查與生產健康關聯性的動機，本研究以SARS疫情爆發為外在衝擊，探討這段期間臺灣懷孕婦女產前檢查情形的變化，並進一步分析影響懷孕結果的因素，期望研究結果能提供政府規劃婦幼預防保健政策參考之用，同時降低婦女的懷孕風險，有效提升新生兒健康素質。本研究發現產檢次數、分娩年齡、胎次及懷孕婦女就業狀態均為影響生產健康的關鍵因素，適齡生產的婦女能避免發生早產或流產，前胎生產經驗有助於降低不良懷孕結果發生率，而自行投保的職業婦女明顯較依附投保婦女有較良好的懷孕健康。

我國每十年進行一次人口普查，以取得國人經常活動地區的資訊，作為中央及地方政府政策規劃的參考。然而，十年一次的人口普查無法即時反映各地區人口特質及其活動，隨著普查完訪率逐年下降、個人資料保護法意識抬頭等趨勢，普查的涵蓋率及其資料品質愈加受到質疑，近年各國思考以其他資料蒐集方式取代傳統普查。我國實施全民健康保險制度已逾20年，民眾納保率超過99%，因此本文以全民健保資料庫為研究素材，透過個人就醫行為探討國人經常活動地區，透過剖析各種疾病的就醫行為，可作為政府評估醫療資源規劃的參考。 本文以全民健保資料庫為依據，探討我國國民選擇醫療地點的特性，作為經常活動地區（或是常住地）的輔助參考。過去研究大多利用上呼吸道感染（俗稱感冒）作為估計常住地的依據，但每年平均只有接近70%國人會因感冒而就醫，其中青壯年、老年人因感冒而就醫的比例明顯較低，以此作為常住地的估計基礎恐有涵蓋率不足之虞。本文依據健保資料庫中的2005年百萬人抽樣檔，包括就醫門診處方及治療明細檔(CD)、承保資料檔(ID)等資料，比較數種常住地判斷的參考準則（包括感冒就醫），分析各方法所觀察到資料的特性及限制，評估以這些準則作為判斷常住地的可行性。 結論：本文提出除了感冒就醫之外的三種常住地推估準則，分別為：因為感冒或是消化就醫、單次健保補助金額較低、基層院所就醫。以樣本涵蓋率量而言，三種準則都能改善感冒就醫涵蓋率的不足，其中以單次金額與基層院所就醫的樣本數增加最多。另外，如果與所有門診資料、普查資料的人口資料比較，發現單次金額與基層院所就醫推估的人口年齡結構最為接近，但單次金額的縣市（地區）結構與普查資料的差異較大。 限制：受限於青壯年人口就醫率較低，本文提出的幾種常住地判斷準則在20歲至44歲的涵蓋率仍然偏低，建議未來研究可經由權數調整修正樣本的年齡等人口結構及比例，或是仰賴就醫以外的紀錄推估，但須考量資料串連及品質等問題。 / Many countries conduct population census every 10 years to acquire the information of population structure and its trend, but the information is not likely to updated since the 10-years period is usually too long. Moreover, the low response rate of questionnaire and the enforcement of Personal Information Protection Act further jeopardize the population census and many question its data quality. Thus, quite a lot of countries are seeking alternatives for collecting the information of de jure population, replacing the regular population census. In this study, we explore the possibility of using the data from National Health Insurance (NHI) Research Database for acquiring the information of de jure population in Taiwan. Taiwan started the NHI in 1995 and more than 99% of Taiwan population are covered. Since the medical accessibility created by the NHI, Taiwan’s people tend to visit medical institutions near to where they live, when they have minor diseases. Past studies showed that the upper respiratory tract infection (or cold) is a popular choice of minor diseases. We will evaluate if the cold is a good candidate and propose alternative criteria for the definition of minor diseases. We found that the proportion of populations with upper respiratory tract infection is about 70% and it is age dependent, with the elderly the lowest. On contrary, the records of smaller amounts and the records of physician clinics (or general practice clinics) can cover more than 90% population, much better than the records of upper respiratory tract infection. The records of digestive system diseases and upper respiratory tract infection can also increase the coverage of elderly population. We recommend using the medical records of smaller amounts to acquire the de jure population.

臺灣在2015年高齡人口（65歲以上）比例超過12.5%，依照國家發展委員會的2016年人口推估，預計將於2018年正式邁入高齡社會（高齡人口比例14%），2026年更突破20%的門檻，人口老化速度持續加快。因為身體機能隨年齡增長等因素逐漸老化，高齡人口的就醫需求通常也較多，包括就醫金額、就醫次數，根據中央健康保險署2014年統計，高齡人口比例約為12.0%，但其醫療費用卻佔總費用37.6%。因此本文以探討高齡人口就醫特性為目標，透過高齡人口就醫行為去了解醫療現況，並評估因老化而引發的醫療資源。 本文以高齡人口特性及就醫需求為研究方向，探討近十年高齡人口就醫需求的基本特性，如：醫療使用率、平均就醫次數及平均醫療費用。接著以高齡人口就醫選擇集中度做為出發點，計算各疾病下的就醫集中程度，探討是否高齡人口會隨著不同疾病而有不同的就醫行為。研究結果顯示年紀越大的高齡人口，醫療使用率反而下降，但平均總醫療花費隨著年齡增加亦跟著上升；另外在不同的疾病下會有不同的就醫行為，當就醫地選擇越一致其死亡率也越低。計算依據為全民健康保險資料庫2005年百萬高齡人口抽樣檔，包括承保資料檔(ID)、門診處方及治療明細檔(CD)、住院醫療費用清單明細檔(DD)，以六十五歲以上高齡人口為研究對象，探討其醫療利用行為及就醫習性。 / The population aging is speeding up in Taiwan. The elderly population (65 years and older) is more than 12.5% in 2015 and, according to the population projection of National Development Council, it is expected to reach 14% and 20% in 2017 and 2026, respectively. The elderly usually require more medical attention, partly due to the fact that the human organs degenerate with time. For example, in 2014, the proportion of elderly is about 12.0% and they account for 37.6% of total medical expenditure (Source: National Health Insurance Administration). Taiwan’s total medical expenditure will continue to grow and we need to understand the medical needs of Taiwan’s elderly, in order to cope with the need of aging society. Therefore, we use the data from the National Health Insurance Research Database (NHIRD) to explore the medical needs and behaviors of receiving medical care of Taiwan’s elderly. The dataset used in this study is a sample (one million people aged 65 and beyond, about 46% of total population) of Taiwan’s elderly and the dataset contains the Registry for beneficiaries (ID), outpatient visits (CD), and inpatient admissions (DD). Our analyses show that almost all elderly have at least one medical visit annually and their diseases are more diverse than those of younger generations. Also, the elderly have larger inertia in medical visits and, for example, the proportion of choosing the same medical institution is higher. The results of this study can serve as a reference to future policy planning and resource allocation for the elderly.