Moerloose et al. (A-18) conducted a study to evaluate the clinical usefulness of a new laboratory technique (method A) for use in the diagnosis of pulmonary embolism (PE). The performance of the new technique was compared with that of a standard technique (method B). Subjects consisted of patients with clinically suspected PE who were admitted to the emergency ward of a European university hospital. The following are the measurements obtained by the two techniques for 85 patients. The researchers performed two analyses: (1) on all 85 pairs of measurements and (2) on those pairs of measurements for which the value for method B was less than 1000.

B AB A B A 9 119 703 599 2526 1830 84 115 725 610 2600 1880 86 108 727 3900 2770 2100 190 182 745 4050 3100 1780 208 294 752 785 3270 1870 218 226 884 914 3280 2480 251 311 920 1520 3410 1440 252 250 966 972 3530 2190 256 312 985 913 3900 2340 264 403 994 556 4260 3490 282 296 1050 1330 4300 4960 294 296 1110 1410 4560 7180 296 303 1170 484 4610 1390 311 336 1190 867 4810 1600 344 333 1250 1350 5070 3770 371 257 1280 1560 5470 2780 407 424 1330 1290 5576 2730 418 265 1340 1540 6230 1260 422 347 1400 1710 6260 2870 459 412 1530 1333 6370 2210 468 389 1560 1250 6430 2210 481 414 1840 764 6500 2380 529 667 1870 1680 7120 5220 540 486 2070 1310 7430 2650 562 720 2120 1360 7800 4910 574 343 2170 1770 8890 4080 646 518 2270 2240 9930 3840 664 801 2490 1910 670 760 2520 2110 Source: Data provided courtesy of Dr. Philippe de Moerloose.