BACKGROUND: The statistical quality of the contributions||| to "Strahlentherapie und Onkologie" is assessed, aiming for improvement of the||| journal and consequently its impact factor. MATERIAL AND METHODS: All 181||| articles published during 1998 and 1999 in the categories "review", "original||| contribution", and "short communication" were analyzed concerning the||| appropriate consideration of Type II error. RESULT: Ninety-nine publications||| were excluded from analysis for different specified reasons. In none of the||| remaining 82 clinical publications Type II error was considered. CONCLUSION:||| Authors, peer reviewers, and editors could contribute to improve the quality of||| the journal by setting value on adequate consideration of Type II||| error.