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Table 1 Reporting characteristics of the study design for 315 randomly selected HuGE articles (2001–2003)

From: Reporting of Human Genome Epidemiology (HuGE) association studies: An empirical assessment

Reporting characteristic Count Percent
Number of study participants   
   < 100 49 15.6
   100–499 190 60.3
   500–999 47 14.9
   >= 1000 29 9.2
Reported the available power of the study   
   No 275 87.3
   Yes 40 12.7
Reported that multiple study populations or case or control groups were used   
   No 235 74.6
   Yes 80 25.4
Provided any information on the origin of the study participants   
   No 38 12.1
   Yes 277 87.9
Provided any information on the enrollment criteria for the study participants   
   No 8 2.5
   Yes 307 97.5
Sex distribution reported for all study participants   
   No 84 26.7
   Yes 231 73.3
Mean or median age reported for all study participants   
   No 109 34.6
   Yes 206 65.4
Standard deviation or interquartile range reported for all study participants   
   No 143 45.4
   Yes 172 54.6
Explicitly stated the use of unrelated study participants   
   No 259 82.2
   Yes 56 17.8
Potential for outcome misclassification   
   No 272 86.3
   Unclear 6 1.9
   Yes 37 11.8