Metrics similar to Total Debt / EBITDA in the risk category include:
Financial Leverage - A ratio that measures the dollars in total assets for each dollar of common equity.
Debt / Total Equity - A ratio that measures the level of the debt relative to the book value of total equity.
Cash Ratio - A strict ratio used to assess a company's short-term liquidity.
Cash Flow / Total Debt - A ratio used in two ways - a) to measure cash flow coverage and b) the inverse ratio to estimate the length of time needed to pay off debts.