NEW YORK -- Standard&Poor's CreditWire Feb. 11, 1999-–Standard&Poor's today affirmed its triple-'B' rating on New Jersey Health Care Facilities Financing Authority's $21 million revenue and refunding bonds series 1997A, issued for Christian Health Care Center. The rating reflects a diversified service offering in long-term care and mental health, strong demand for services, profitable operations, and moderate liquidity. Mitigating factors include weak debt service coverage, significant leverage, and project risk with a new assisted living center. Christian Health Care Center has an 87-year history and is located on an 81-acre, Bergen County campus. Services provided include skilled nursing, residential health care, senior housing, adult-day care, psychiatric care, specialized long-term care for behavior management (one of only two