Does additional confounder information alter the estimated risk of bleeding associated with phenprocoumon use—results of a two‐phase study
Does additional confounder information alter the estimated risk of bleeding associated with phenprocoumon use—results of a two‐phase study
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额外的混杂信息是否会改变与苯丙香豆素使用相关的估计出血风险——两阶段研究的结果
DOI:
10.1002/pds.3193
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发表时间:
2012
影响因子:
2.6
通讯作者:
Pigeot
中科院分区:
文献类型:
--
作者:
Schill;Pigeot
PurposeClaims databases are an important source for pharmacoepidemiological studies although they often lack information on some confounders. Two‐phase methodology was used to estimate the bleeding risk in patients treated with phenprocoumon from claims data combined with additional information on body mass index (BMI) and smoking.MethodsWe conducted a nested case–control study using claims data from 2004 to 2007 (phase 1). Additional information was obtained from interviews in a subset of 505 insurants (phase 2). Adjusted bleeding OR were calculated using logistic regression using data from the complete case–control dataset. Furthermore, a two‐phase analysis was conducted, taking into consideration phase 2 data on BMI and smoking.ResultsThe phase 1 sample included 1248 cases and 24 960 controls. In phase 1, we observed an adjusted bleeding ORs of 3.93 (95%CI: 2.75–5.61) for male subjects aged 55 years taking phenprocoumon. The bleeding risk associated with phenprocoumon use decreased with increasing age. The two‐phase analysis revealed smoking and a high BMI as risk factors for bleeding. The OR for phenprocoumon obtained from the two‐phase analysis was of similar size as the phase 1 estimate.DiscussionPhase 2 data added valuable information on smoking and BMI. However, phase 1 results did not change dramatically after accounting for phase 2 information, which is reassuring for the validity of database studies. Copyright © 2012 John Wiley & Sons, Ltd.
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影响因子:
7.2
作者:
F. P. Penning;J. Geleijnse;E. van Meegen;C. Vermeer;F. Rosendaal;B. Stricker
通讯作者:
B. Stricker
影响因子:
5.8
作者:
Haneuse,Sebastien;Saegusa,Takumi;Lumley,Thomas
通讯作者:
Lumley,Thomas
影响因子:
2
作者:
Walter Schill;K. Drescher
通讯作者:
K. Drescher
DOI:
--
发表时间:
--
期刊:
影响因子:
--
作者:
F. Ludwig
通讯作者:
F. Ludwig
影响因子:
29.4
作者:
Strate LL;Liu YL;Aldoori WH;Syngal S;Giovannucci EL
通讯作者:
Giovannucci EL