Statistics notes - The cost of dichotomising continuous variables

被引:1835
作者
Altman, DG [1 ]
Royston, P
机构
[1] Univ Oxford Wolfson Coll, Canc Res UK NHS Ctr Stat Med, Oxford OX2 6UD, England
[2] MRC, Clin Trials Unit, London NW1 2DA, England
来源
BRITISH MEDICAL JOURNAL | 2006年 / 332卷 / 7549期
基金
英国医学研究理事会;
关键词
D O I
10.1136/bmj.332.7549.1080
中图分类号
R5 [内科学];
学科分类号
1002 ; 100201 ;
摘要
引用
收藏
页码:1080 / 1080
页数:1
相关论文
共 8 条
[1]   DANGERS OF USING OPTIMAL CUTPOINTS IN THE EVALUATION OF PROGNOSTIC FACTORS [J].
ALTMAN, DG ;
LAUSEN, B ;
SAUERBREI, W ;
SCHUMACHER, M .
JOURNAL OF THE NATIONAL CANCER INSTITUTE, 1994, 86 (11) :829-835
[2]   Inflation of the type I error rate when a continuous confounding variable is categorized in logistic regression analyses [J].
Austin, PC ;
Brunner, LJ .
STATISTICS IN MEDICINE, 2004, 23 (07) :1159-1178
[3]   Problems in defining cutoff points of continuous prognostic factors: Example of tumor thickness in primary cutaneous melanoma [J].
Buettner, P ;
Garbe, C ;
GuggenmoosHolzmann, I .
JOURNAL OF CLINICAL EPIDEMIOLOGY, 1997, 50 (11) :1201-1210
[4]   THE COST OF DICHOTOMIZATION [J].
COHEN, J .
APPLIED PSYCHOLOGICAL MEASUREMENT, 1983, 7 (03) :249-253
[5]   Treatment of continuous data as categoric variables in Obstetrics and Gynecology [J].
DelPriore, G ;
Zandieh, P ;
Lee, MJ .
OBSTETRICS AND GYNECOLOGY, 1997, 89 (03) :351-354
[6]   On the practice of dichotomization of quantitative variables [J].
MacCallum, RC ;
Zhang, SB ;
Preacher, KJ ;
Rucker, DD .
PSYCHOLOGICAL METHODS, 2002, 7 (01) :19-40
[7]   Dichotomizing continuous predictors in multiple regression: a bad idea [J].
Royston, P ;
Altman, DG ;
Sauerbrei, W .
STATISTICS IN MEDICINE, 2006, 25 (01) :127-141
[8]  
Royston P, 2005, METHOD INFORM MED, V44, P561