Age (years)	50<	50-60	60-70	70-80	80-90	90+	All
D-dimer Mean (SD)	390 (740)	398 (734)	431 (619)	643 (891)	632 (807)	679 (631)	513 (777)
D-dimer Median	178	188	255	340	400	469	285
p value	-	>0.1	>0.1	<0.001	<0.001	<0.01