More medical schools were found to have disadvantaged female applicants in their entrance exams, in a survey taken after the discovery that a Tokyo medical university had manipulated test scores to curb female enrollment, education minister Masahiko Shibayama said Friday.

Shibayama told a news conference that there is a "strong suspicion" of undue bias against female applicants, and men who have failed the exams in the past.

Excluding Tokyo Medical University, none of the 81 schools covered by the ministry's survey have admitted to rigging exam scores to discriminate against applicants by gender or age.