What if you needed a hip replacement and could click through a list of area hospitals to compare costs and outcomes for the procedure? That kind of transparency of information might go a long way towards improving quality of care and lowering costs, a panel of experts suggested Monday at a forum on health care costs convened by the Universal Health Care Foundation of Connecticut. “I look at the variance in some of the costs, when we’ve got three or four times the variance in cost for a hip (replacement), for the same hardware . . .