When using analytical procedures to identify predictable relationships, higher levels of evidence will be obtained when those relationships are most predictable. Relationships involving income statement accounts, such as interest expense, tend to be more predictable than relationships involving only balance sheet accounts because income statement accounts represent transactions over a period of time rather than a point in time. Also, interest expense, which can be related to debt, is more predictable than the travel and entertainment expense, which is more subject to management discretion.