Crossover designs versus parallel studies in infertility research [2] (multiple letters)

Fertility and Sterility

Volumn 69, Issue 2, 1998, Pages 357-358

  te Velde, E R ^a   Cohlen, B J ^a   Looman, C W N ^a   Habbema, J D F ^a   Daya, S ^a   Khan, K S ^a   Collins, J A ^a  

^a UNIVERSITY MEDICAL CENTER UTRECHT   (Netherlands)

Author keywords

[No Author keywords available]

Indexed keywords

CLINICAL TRIAL; CROSSOVER PROCEDURE; HUMAN; INFERTILITY; LETTER; META ANALYSIS; PRIORITY JOURNAL; REPRODUCTION; RESEARCH;

EID: 0031905945     PISSN: 00150282     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0015-0282(97)00491-3     Document Type: Letter

References (2)

1. KS Khan S Daya JA Collins SD Walter Empirical evidence of bias in infertility research: overestimation of treatment effect in crossover trials using pregnancy as the outcome measure Fertil Steril 65 1996 939 945
2. DL Olive MC Doody A comparison of study design methods for cycle-specific treatments of infertility J Gynecol Tech 1 1995 189 194