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This study suggests that a narrow caliper can improve the performance of propensity score matching.
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A comparator patient was selected for each of the tegaserod initiators on the basis of a narrow and fixed caliper of propensity score (0.01).
The caliper width was narrowed down progressively from 0.2*δ (0.2 of the standard deviation of the estimated propensity score) until all the baseline variables appeared with no significant differences [ 26].
Joint space width was measured in the narrowest point of the tibiofemoral compartment by 0.1 caliper and magnifying glass.
With ascending and descending matching, a match that was made by using a wide caliper may not be made by using a narrower one and, hence, that control will be available for matching to a different case.
Ennis, high-arched nose and narrow face, was scruffy and a little cave-chested, balanced a small torso on long, caliper legs, and possessed a muscular and supple body made for the horse and for fighting.
Stenosis quantification by CTA using visual estimation (CTAVE) (method 1) was compared with caliper measurements using subjectively optimized wide window settings (method 2) or predefined contrast-dependent narrow window settings (method 3).
At the level of a narrow stenosis, however, blurring of vessel edges is almost inevitable and may hamper proper selection of the point where the caliper must be placed.
Narrow conversation.
Mr. Greenberg and his partner, David Mayer, started Caliper with a $15,000 loan.
Caliper Technologies has received two takeover offers from Little Bear Investments of New York, both worth more than Caliper's market value but less than its cash level.
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