Table 4.

PIF occurrences through age-groups

Variable	Age, years			p value
	40	40–60	60+
Original reports
PIF	5	18	15	0.492a
No PIF	52	139	83
Re-evaluation
PIF	10	49	26	0.138a
No PIF	47	108	72

PIF, potentially important incidental finding.

^aFisher's exact test.