Why the study?
Is the visual comparison method statistically valid compared to the calculated regression line for anticoagulant control using the British system?
Is the visual comparison method statistically valid compared to the calculated regression line for anticoagulant control using the British system?
The recommended visual procedure for anticoagulant control using the British comparative thromboplastin provides an adequate conversion without the need for calculation.
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Supports visual comparison without calculation for anticoagulant control; leaves open prospective validation in modern cohorts.
Alderson et al. (1970) studied this question.
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