首页 | 本学科首页   官方微博 | 高级检索  
文章检索
  按 检索   检索词:      
出版年份:   被引次数:   他引次数: 提示:输入*表示无穷大
  收费全文   4600篇
  免费   288篇
  国内免费   30篇
耳鼻咽喉   89篇
儿科学   173篇
妇产科学   78篇
基础医学   388篇
口腔科学   122篇
临床医学   661篇
内科学   760篇
皮肤病学   66篇
神经病学   561篇
特种医学   57篇
外科学   382篇
综合类   389篇
现状与发展   1篇
预防医学   722篇
眼科学   71篇
药学   226篇
  3篇
中国医学   93篇
肿瘤学   76篇
  2024年   7篇
  2023年   126篇
  2022年   185篇
  2021年   257篇
  2020年   213篇
  2019年   245篇
  2018年   278篇
  2017年   177篇
  2016年   184篇
  2015年   121篇
  2014年   359篇
  2013年   352篇
  2012年   264篇
  2011年   314篇
  2010年   235篇
  2009年   247篇
  2008年   280篇
  2007年   220篇
  2006年   168篇
  2005年   115篇
  2004年   98篇
  2003年   89篇
  2002年   57篇
  2001年   50篇
  2000年   49篇
  1999年   46篇
  1998年   38篇
  1997年   22篇
  1996年   22篇
  1995年   12篇
  1994年   7篇
  1993年   5篇
  1992年   8篇
  1991年   10篇
  1990年   5篇
  1989年   12篇
  1988年   9篇
  1987年   4篇
  1986年   5篇
  1985年   5篇
  1984年   1篇
  1983年   2篇
  1982年   5篇
  1981年   2篇
  1980年   2篇
  1979年   1篇
  1978年   1篇
  1973年   1篇
  1972年   2篇
  1970年   1篇
排序方式: 共有4918条查询结果,搜索用时 15 毫秒
71.
目的 了解浙江省中医护理技术分级的现状,为中医护理技术的培训、管理及相关政策制订提供依据。方法 2020年8月—9月采用自行设计的中医护理技术分级开展情况调查表对浙江省中医医疗机构进行调查。调查内容包括技术分级方法、原则和具体技术分级情况。 结果 共调查94所中医医疗机构,回收有效问卷92份。结果显示,72所(78.26%)中医医疗机构实施了中医护理技术分级,分级方法有6种,按一类、二类、三类技术进行分级是主要分级方法(52.78%)。各医疗机构的技术分级原则不统一,技术分级存在不一致现象,部分技术的分级存在较大差别。 结论 浙江省各级中医医疗机构重视中医护理技术的分级管理,但缺乏同质性,建议制订分级管理策略,明确分级方法与原则,统一各项技术的分级,提高技术应用的规范性。  相似文献   
72.
73.
PurposeThe diabetic foot self-care questionnaire is considered a self-care evaluation tool with 16 questions for assessing diabetic foot health disorders. To date, the DFSQ has been validated in different languages, but an Arabic version was lacking. Consequently, the purpose of this study was to translate and validate the Arabic version of the DFSQ (DFSQ-AR).MethodA suitable method was developed for the translation protocol and cross-cultural validation from Spanish to Arabic. Regarding the total marks from each sub-scale, agreement degrees and confidence were analyzed using Cronbach's α and intraclass correlation coefficient (ICC), respectively. In addition, the mean ± standard deviation differences between pre and post-tests were calculated and completed using Bland-Altman distribution plots.ResultsExcellent agreement between the two versions was demonstrated based on Cronbach's α. Three sub-scales consisting of knowledge of foot hygiene, the appropriate use of footwear and socks, and podiatric self-care were added together to obtain the total score. Excellent retest reliability was shown for the total score. Test/retest reliability was excellent for the self-care and shoe and socks sub-scales. There were no significant differences among any domains (p > 0.05). There were no statistically significant differences (P = 0.000) for the mean ± standard deviations (SD) between pre- and post-tests (98.09 ± 15.42) [93.75–102.43] and 97.96 ± 13.88 [94.5–101.86] points, respectively). Bland-Altman plots or clinically pertinent variations were not statistically significantly different.ConclusionsThe DFSQ-AR is considered a strong and valid questionnaire with adequate repeatability in the Arabic language population.  相似文献   
74.
We performed a questionnaire-based, retrospective, nationwide survey on perioperative management and antimicrobial prophylaxis for mid-urethral sling surgery for stress urinary incontinence in Japan to realize the clinical practice and risk factors for SSI.Records of women receiving transobturator tape (TOT) and tension-free vaginal tape (TVT) surgeries from 2010 to 2012 were obtained from hospitals belonging to the Japanese Society of Pelvic Organ Prolapse Surgery. The questionnaire addressed hospital volume, perioperative management, and SSI. Risk factors for SSI were investigated by comparing cases with and without SSI.The data from 97 hospitals and a total 1627 TOT and 1045 TVT surgeries were analyzed. Mean case volumes of TOT and TVT surgeries were 7.3 ± 14.9 and 7.1 ± 17.8 cases per year, respectively. Preoperative hair removal, bowel preparation, and urine culture were routinely performed at 44 (45.3%), 31 (32.0%), and 22 (22.7%) hospitals, respectively. First-generation (51.5%) or second-generation (34.0%) cephalosporin was mostly used for antimicrobial prophylaxis. SSI was reported only in 6 patients (0.22%) and none of them developed abscesses. None of the factors we could evaluate from the questionnaire were found to be significantly associated with SSI.SSI after mid-urethral slings rarely occurred in Japan (0.22%) and no parameters about perioperative managements significantly increased SSI. However, further studies with more detail information of each patient and operation are required to confirm their appropriate perioperative managements for mid-urethral slings.  相似文献   
75.
ObjectiveThe Biological Rhythms Interview of Assessment in Neuropsychiatry (BRIAN) might be applicable for assessing delayed sleep-wake phase disorder (DSWPD). We aimed to investigate the reliability and validity of the Japanese version of the BRIAN self-report (J-BRIAN-SR) in DSWPD patients and determine a cutoff score to identify the presence of the disorder.MethodsWe enrolled 60 newly diagnosed DSWPD outpatients and 64 age-matched healthy controls. We used Cronbach's alpha for internal reliability to evaluate J-BRIAN-SR. We confirmed the reliability of the A test and re-test using Pearson's correlation coefficient in the controls. We used confirmatory factor analysis to evaluate the factor structure of J-BRIAN-SR and referenced the Morningness-Eveningness Questionnaire (MEQ) to check concurrent validity. We analyzed the receiver operating characteristic curve (ROC) to determine the J-BRIAN-SR cutoff point for the presence of DSWPD.ResultsThe 18-component scores of the J-BRIAN-SR had an overall reliability coefficient (Cronbach's alpha) of 0.82. We confirmed a high test-retest reliability using an intraclass correlation coefficient (r = 0.84). The correlation between J-BRIAN-SR and MEQ was 0.38 (p = 0.003). The J-BRIAN-SR that we extracted by exploratory factor analysis consisted of three factors. A score of 40 points provided a sensitivity of 80.0% and a specificity of 75.6% for the positivity of DSWPD.ConclusionsThe results of the present study revealed that J-BRIAN-SR is a valid and reliable instrument for screening and evaluating the severity of DSWPD. Our findings will be useful to physicians and patients in Japan and those in clinical settings.  相似文献   
76.
BackgroundThere are many barriers that prevent persons with mental health disorders from achieving remission, including medication nonadherence. Research on the impact of pharmacist-led patient medication education groups on patient attitudes, knowledge and adherence is limited.ObjectiveTo evaluate the reliability and validity of the Medication Attitudes and Knowledge Questionnaire (MAKQ).MethodsA retrospective pre-post questionnaire was distributed to patients. Variables collected included: patient self-reported medication knowledge and attitudes, patient demographics, number of previous psychiatric hospitalizations, whether the patient attended the whole meeting or only a portion, and outpatient pharmacist relationships. Knowledge and attitude items were measured on a 4-point scale with a range of options from “Agree” to “Disagree.” Rasch analysis was conducted to ensure all items measured the same construct and to assess scale and item reliability and validity. Additionally, the Rasch technique evaluated the change in each person's self-perceived attitudes, knowledge, and confidence in self-managing medications from pre- to post-intervention if the data fit the model. A z-test was used to evaluate gaps in content validity.ResultsSixty patients responded to the MAKQ over the 16-week data collection period. Analysis showed that the 4-point rating scale was not useful and that negatively worded items should be eliminated. Gaps identified in instrument item content were not statistically significant (p > 0.05), indicating comprehensive content validity.ConclusionsMedication attitudes and knowledge items on the retrospective pre-post questionnaire were valid and reliable.  相似文献   
77.
78.
目的 了解儿童心理行为状况,为改善儿童心理行为问题提供依据。方法 针对本院医务人员子女采用整群随机抽样的方法,通过手机端发放长处和困难问卷(Strengths and Difficulties Questionnaire,SDQ)电子版进行调查,收集儿童心理行为健康相关信息。结果 本研究纳入观察病例共562份,年龄均值(8.06±3.251)岁。其中,男275名(48.9%),女287名(51.1%);学龄期儿童311名(55.3%),学龄前期儿童251名(44.7%)。SDQ困难总分评定异常者12.9%,边缘状态者18.1%,正常者69%。情绪问题 、品行问题 、同伴关系问题 、多动问题 、困难总分、亲社会行为各因子异常检出率分别为9.6%、9.8%、19.2%、18.1%、12.9%、7.8%。不同性别儿童SDQ困难总分、情绪症状、亲社会行为、品行问题差异无统计学意义(P>0.05)。男生多动问题、同伴关系问题评分分别为(3.87±1.471)分、(4.53±1.542)分,分别高于女生的(3.65±1.415)分、(4.31±1.554)分,差异有统计学意义(t=0.96、7.65,P<0.05)。学龄前期儿童与学龄期儿童情绪症状、品行问题、亲社会行为差异无统计学意义(P>0.05)。学龄期儿童同伴关系问题、多动问题、困难总分评分分别为(4.53±1.507)分、(3.85±1.298)分、(12.15±3.613)分,分别高于学龄前期儿童的(4.26±1.652)分、(3.54±1.402)分、(11.45±4.39)分,差异有统计学意义(t=5.36、6.57、14.32,P<0.05)。结论 调查发现,本院医务人员子女心理行为问题发生率较高。应进一步核实诊断,根据不同的心理特征及年龄分类,及早给予心理支持和干预,并由心理医生对这一群体进行长期随访。  相似文献   
79.
BackgroundThere is increasing research interest regarding physical activity behavior among persons with multiple sclerosis (MS), yet there is little known about physical activity and its correlates in Black persons with MS.ObjectiveThis cross-sectional study assessed associations among social cognitive theory (SCT) variables and device-measured and self-reported physical activity in samples of Black and White persons with MS.MethodsParticipants included 67 Black and 141 White persons with MS who wore an ActiGraph accelerometer on a belt around the waist measuring moderate-to-vigorous physical activity (MVPA) for seven days and completed a battery of questionnaires. Questionnaires included demographic and clinical characteristics, leisure-time exercise, exercise self-efficacy, overcoming barriers self-efficacy, function, social support, exercise outcome expectations, and goal setting and planning.ResultsBlack participants with MS engaged in significantly less MVPA, but not sedentary behavior or light physical activity, than the White participants with MS. Black participants further had significantly lower levels of exercise self-efficacy and outcome expectations than the White sample. All SCT correlates were significantly correlated with self-reported physical activity, but only exercise and barriers self-efficacy, perceived function, and exercise goal setting were associated with device-measured MVPA. The difference in physical activity between Black and White participants with MS was accounted for by differences in exercise self-efficacy and outcome expectations.ConclusionsResearchers should consider developing behavioral interventions that target exercise self-efficacy and outcome expectations as SCT variables for increasing physical activity in Black persons with MS.  相似文献   
80.
ObjectiveThe purposes of the present study were to explore independent and interactive associations between night sleep duration, night sleep quality and coronary heart disease (CHD) based on a rural population in China.MethodsA total of 27,935 participants (11,177 men and 16,758 women) were investigated from the Henan Rural Cohort. Information about sleep was assessed by using the Pittsburgh Sleep Quality Index (PSQI). Restricted cubic splines and logistic regression were used to estimate the relationship between night sleep duration and quality with CHD.ResultAmong the 27,935 participants, 1506 participants with CHD were identified. Compared with participants with scores lower than 3, the odds ratios (ORs) and 95% confidence intervals (95% CIs) of participants with score of 3–5, 6–8, ≥9 were respectively 1.42 (1.24–1.63), 1.99 (1.70–2.33), and 2.56 (2.13–3.08) with full adjustment of covariates. Compared with night sleep duration of 7 h, men and women who slept less than 5 h were 1.55 (1.11–2.17), 1.12 (0.59–2.12) and 1.80 (1.20–2.68), after being adjusted ORs (95% CIs) of the total. Moreover, the ORs and 95% CIs of CHD increased with the shortening of sleep duration at PSQI score above the highlighted levels.ConclusionPoor sleep quality and short night sleep duration were all associated with CHD in Chinese rural areas. Moreover, the association was more obvious in women. In addition, the strongest prevalence of CHD was found in short sleepers with poor sleep quality.  相似文献   
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号