糖尿病是全球關注的議題，糖尿病所伴隨的住院天數、醫療花費及死亡率都高於非糖尿病患者。研究指出內外控人格特質為個人面對擾人疾病是否有信心的重要特質來源。因此，糖尿病患者的人格特質對於其照護成效顯得格外重要。本研究目的在探討參加糖尿病共照網之糖尿病人的內外控性格、自我照顧活動與糖化血色素（hemoglobin A1c,HbA1c）之相關性。採橫斷性、描述性相關性研究設計，於108年1月1日至109年7月31日以某醫院糖尿病共照網之200位糖尿病病人為研究對象，以人口學變項、多層面健康控制信念量表、自我照顧活動與血糖等量表進行資料收集，描述性資料、變異數分析、皮爾森相關性、逐步迴歸等資料是以SPSS 19.0版的統計軟體做分析。本研究計畫通過人體研究倫理委員會之審查（核准編號：106-B-12-01）。結果顯示：（1）平均年齡為61.36±12.33歲，54.0%為男生，平均體重為70.26±14.98公斤，平均BMI為27.12±4.80kg/m^2，77.5%為已婚，78.0%教育程度為高中職以下，94.5%與家人同住，52.5%沒有在工作了，92.5%罹患其他慢性病，58.0%有糖尿病家族史，53.5%的罹病超過6年，84.5%的病人為口服藥物，83.5%無併發症，81.5%最近半年沒有吸菸習慣。（2）健康內外控平均得分以「有力人士控制」最高，其次是內控，「機運」為最低。（3）自我照顧活動方面，得分最高是抽菸，其次是飲食節制，第三是定期檢驗血糖，最後是足部照護。（4）HbA1c介於5.0－12.8%，HbA1c平均值為7.29±1.13%，只有5.5%為控制理想（HbA1c<6%）。（5）內控、有力人士控制與自我照顧對HbA1c有統計上的顯著差異性存在。（6）影響HbA1c的逐步迴歸分析為：飲食、目前治療方式、運動等三個變項，聯合解釋變異量為27.4%調，整後為26.3%，以F考驗結果，此一解釋力具有統計意義（F（3,196）=24.713，p<.0001），其中以飲食最具預測力，其單獨解釋量為23.6%。本研究顯示個人相信自己有能力及外在有力人士控制能將血糖控制良好。而本研究結果可以提供臨床護理照護介入措施之參考。

Diabetes is a worldwide issue. The hospital days, medical-related fee, and mortality rate in diabetes are higher than those non-diabetes. Research showed that health locus of control is the important character resource of facing puzzle disease. Thus, the characteristic of health locus of control of diabetes patients is special important. The aims of this study were to investigate the relationships among locus of control, self-care activities, and HbA1c (hemoglobin A1c). A cross-sectional survey was conducted with a total of 200 type 2 diabetes patients recruited from the outpatient Diabetes Shared Care Department of a medical center in northern Taiwan during January, 2019 to July, 2020. The data were collected from. A set of questionnaires that included demographic characteristics, Internal-External Locus of Control, self-care activities, and HbA1c were administered. Descriptive statistics, ANOVA, Pearson's product moment correlation, and stepwise regression were utilized by SPSS 19.0 version. Ethical approval (106-B-12-01) was obtained from the regional research ethical committee and all participants provided their consent to participate in the study. Results showed: (1) The average age was 61.36 ± 12.33 years old. 54.0% attendance were male. The average weight was 70.26 ± 14.98 kg. The average BMI was 27.12 ± 4.80 kg/m^2. 77.5% were married. 78.0% attendance s' education level was under senior high school. 94.5% lived with family. 52.5% attendance had not work. 92.5% attendance suffered chronic illness. 58.0% had family diabetes history. 53.5% attendance suffered diabetes more than 6 years. 84.5% attendance were taking oral medicine. 83.5% attendance were no complications. 81.5% attendance were no smoking habit in recent half years. (2) In the scale of health locus of control, power others Health Locus of Control got the highest score, then Internal Health Locus of Control, followed by Chance Health Locus of Control. (3) In the self care activities part, smoking got the highest score, then diet control, regular blood test, followed by foot care. (4) The range of HbA1c was 5.0-12.8%, average was 7.29 ± 1.13%. Only 5.5% attendance were in ideal control (HbA1c < 6 %). (5) Internal Health Locus of Control, power others Health Locus of Control and self care activities had significant association with HbA1c. (6) After step regression, diet, treatment method, and exercise had significant association with HbA1c, which could explain 27.4% variation. Adjusted was 26.3%. Using F test, the explaination power was significant (F(3,196) = 24.713, p < .0001). In addition, diet had the best predictability, which was 23.6%. Additionaally, the results showed that internal health locus of control and power others health locus of control were the reasons of controlling blood sugar. The results of this study could be used as a reference for clinical nursing care intervention program.