Comparison of nausea occurrence between the standard care cohort and the acupuncture cohort, adjusted for confounding factors for nausea.

Relative risks for nausea (prevalence acupuncture cohort/ standard care cohort) during a cross sectional week of radiotherapy (mean dose 27 Gray in both cohorts). 1Verum and sham treated patients. 2Overall adjustment included adjustment for concomitant chemotherapy, age and nausea in any previous situation.