Standard&Poor's Ratings Services revised its rating outlook on Trinity Health, Mich.'s bonds, issued by various issuers, to positive from stable, reflecting Trinity Health's recent stronger leadership, patient utilization, and financial performance. Aside from these trends continuing, a rating upgrade also would be predicated upon not incurring substantial amounts of additional debt and making continued progress reducing unfunded liabilities associated with employee pension and health benefits while not diluting liquidity. Standard&Poor's also assigned its 'AA-' rating to Michigan State Hospital Finance Authority's $117.72 million series 2006A revenue bonds and Indiana Health and Educational Facility Financing Authority's $10.82 million series 2006B revenue bonds, both issued for Trinity Health, a health care system headquartered in Novi, Mich. Additionally Standard