Corporate Canada has few women at its boardroom tables and there is little evidence that the situation will change anytime soon. Research...found that 45 per cent of the country's largest companies did not have a single female director. The study found just one firm -- Corus Entertainment Inc. -- that had an equal number of men and women on its board. [refers to relatively good representation of women at National Bank of Canada, Cara Operations, Jean Coutu Group] [refers also to Bank of Montreal, Royal Bank of Canada, Shaw Communications]