Years of service	Symptom (%)		P-value	Sign (%)		P-value	Approach (%)		P-value
Years of service	Wrong	Right	P-value	Wrong	Right	P-value	Wrong	Right	P-value
0 - 5	70.4	29.6	0.29	61.6	38.4	0.78	68	32	0.02
6 - 10	63	37		74.1	25.9		51.9	48.1
11 - 20	70.8	29.2		54.2	45.8		58.3	41.7
>20	53.3	46.7		60	40		40	60