The surveys of senior loan officers conducted in most advanced economies are examples of this. The growth of various credit and money aggregates can also be used as a rough guide. Of course, since movements in credit and money can be driven by either demand or supply factors, it won't always be clear which way the real financial linkages are running.
Moreover, relationships between money, credit, and the real economy are seldom stable, even in tranquil times. In periods of high volatility and very low interest rates, the instability becomes even more extreme. As a result, price and interest rate measures are likely to prove more reliable.