BIOCHEMICAL MARKERS OF COMPLIANCE IN THE PHYSICIANS HEALTH STUDY

被引:31
作者
SATTERFIELD, S [1 ]
GRECO, PJ [1 ]
GOLDHABER, SZ [1 ]
STAMPFER, MJ [1 ]
SWARTZ, SL [1 ]
STEIN, EA [1 ]
KAPLAN, L [1 ]
HENNEKENS, CH [1 ]
机构
[1] BRIGHAM & WOMENS HOSP,DEPT MED,CHANNING LAB,BOSTON,MA 02115
关键词
D O I
10.1016/S0749-3797(18)30997-8
中图分类号
R1 [预防医学、卫生学];
学科分类号
1004 ; 120402 ;
摘要
The Physicians' Health Study is a randomized, double-blind, placebo-controlled trial using a 2 X 2 factorial design to test the effects of low-dose aspirin on risk of cardiovascular disease and beta-carotene supplementation on the incidence of cancer. To evaluate self-reported compliance with assigned treatment, we measured serum thromboxane B2, which is decreased after aspirin use, and plasma beta-carotene in samples of study participants drawn from three geographic locations in three different time periods. Thromboxane B2 levels were markedly lower in those assigned to aspirin (median = 63.5 pg/mL) than in those given aspirin placebo (median = 3,600 pg/mL, P < .0001). Similarly, those assigned to beta-carotene had significantly higher levels (median = 1,176 ng/mL) than those given placebo (median = 306 ng/mL, P < .0001). In addition, there was a highly significant positive correlation between levels of these biochemical markers and the self-reports of compliance (tau = 0.65 for thromboxane B2 and tau = 0.69 for beta-carotene, P < .0001). These findings support the validity of the self-reported compliance in the Physicians' Health Study.
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页码:290 / 294
页数:5
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