Study on Methodology of Search Strategies for Chinese Therapeutic Literature_Chinese Journal of Evidence-Based Medicine

Authors：

ZHANG Han , GUO Jijun

Faculty of Information Management and Information Syst em （Medicine）; Chinese Medical University; Shenyang 110001; China;

Corresponding author：

Keywords：

Literature retrieval; Evidence-based medicine; Best strategy; Word freque ncy analysis

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Objective 　To study the methodology of Chinese literature retrieval.
Methods 　The manual review of the literature was served as the “gold standard” against database search strategies (the diagnostic tests). We selected original articles about treatment, rehabilitation and randomized controlled trials from 31 journals. The articles were downloaded from the Chinese Biomedical Database (CBM). We selected potentially useful words through a word frequency analysis and determined the frequency of all the words in the titles, abstracts, and subject indexes. All the selected journals functioned as a closed database. The sensitivity, specificity and precision of all the high frequency words were calculated and the high frequency words of large sensitivity×precision were considered as final searching words. All the searching strategies were produced by computer programe which consisted of all searching words, title field and abstract field. Meanwhile, the sensitivity, specificity, precision and NNR (number needed to read) were calculated. Among the strategies, those comprised of all searching words would be used in CBM disc database, those of title and abstract words in Chinese Web Databases. The best strategies were those of high sensitivity and high specificity.
Results 　2 570 articles were selected and 45 articles met the gold standard. The strategies emphasized sensitivity were “therapeutic use OR random OR control(for CBM disc) and multicenter OR therapeutic outcome OR random (for Chinese online databases)”. The strategies emphasized specificity were “placebo OR prospective study(MH) OR double blind OR random controled trial (MH) (for CBM disc) and placebo OR prospective) OR double blind OR efficiency (for Chinese online databases).”
Conclusions 　The method is optimal for Chinese literature databases

Citation： ZHANG Han,GUO Jijun. Study on Methodology of Search Strategies for Chinese Therapeutic Literature. Chinese Journal of Evidence-Based Medicine, 2005, 05(6): 472-478. doi: Copy

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1. 廖二元, 邓小戈, 周智广, 王平芳, 伍汉文, 超楚生, 唐炜立, 伍贤平, 黄干, 彭健. 尼尔雌醇加孕激素治疗绝经后骨质疏松症的研究[J]. 中华内分泌代谢杂志, 2002; 18(2): 95～98.
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6. 王顺铨. 对社区高血压病患者进行综合干预的前瞻性对照研究[J]. 中华内科杂志, 2002; 41(3): 168～171.
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8. 石晓云, 香美, 刘述文, 庄永泽, 张燕平. 血管紧张素转换酶抑制剂对IgA肾病的疗效及影响因素分析[J]. 中华内科杂志, 2002; 41(6): 399～403.
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10. 林三仁. 雷贝拉唑与奥美拉唑对十二指肠溃疡患者症状的短期疗效[J]. 中华内科杂志, 2002; 41(9): 589～591.
11. 周丽雅, 林三仁, 沈祖尧, 钟尚志, 丁士刚, 黄雪彪, 王立新, 夏志伟, 金珠, 曹世植. 根除幽门螺杆菌对溃疡病及再感染的五年随访研究[J]. 中华消化杂志, 2002; 22(2): 76～79.
12. 胡伏莲. 以复方铋剂为主的四联疗法根除幽门螺杆菌全国多中心临床研究[J]. 中华消化杂志, 2002; 22(5): 271～274.
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14. 毛朝旭, 冯惠芳, 薛定荣. 培哚普利治疗慢性心力衰竭长期随访效果[J]. 中华心血管病杂志, 2002; 30(1): 28～30.
15. 朱文玲. 急性心肌梗死早期门冬氨酸钾镁治疗多中心随机对照试验[J]. 中华心血管病杂志, 2002; 30(2): 82～85.
16. 曾强, 王静, 苑杰, 刘国树. 阿罗洛尔及咪唑普利对高血压病患者利钾尿肽与心钠素比值的影响[J]. 中华心血管病杂志, 2002; 30(2): 93～96.
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18. 金鑫, 吴小未, 王俊芳, 黄碧波, 王全录, 张通, 钮竹, 张晓明. 经颅磁刺激在脑梗死患者运动功能康复中的效果[J]. 中华医学杂志, 2002; 82(8): 534～537.
19. 崔速南, 汪明明, 范桂玲. 大剂量联苯双酯抗乙型肝炎病毒疗效的临床观察[J]. 中华医学杂志, 2002; 82(8): 538～540.
20. 姚兰, 王天龙, 杨拔贤. 不同硬膜外给药方式对全子宫切除患者术后镇痛效果的比较[J]. 中华医学杂志, 2002; 82(11): 756～758.
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26. 张其胜, 袁汝华, 王慧. 5-单硝酸异山梨醇酯和普萘洛尔预防肝硬化食管静脉曲张再出血的随机对照研究[J]. 中华医学杂志, 2002; 82(17): 1157-1159.
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Chinese Journal of Evidence-Based Medicine

Study on Methodology of Search Strategies for Chinese Therapeutic Literature

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