INTERPRETING A SINGLE ANTISTREPTOLYSIN-O TEST - A COMPARISON OF THE UPPER LIMIT OF NORMAL AND LIKELIHOOD RATIO METHODS

被引:17
作者
GRAY, GC
STRUEWING, JP
HYAMS, KC
ESCAMILLA, J
TUPPONCE, AK
KAPLAN, EL
机构
[1] USN,MED RES UNIT 3,CAIRO,EGYPT
[2] USN,ENVIRONM & PREVENT MED UNIT 5,SAN DIEGO,CA 92136
[3] USN,MED RES INST,BETHESDA,MD 20814
[4] USN,ENVIRONM & PREVENT MED UNIT 6,HONOLULU,HI 96860
[5] USN,ENVIRONM & PREVENT MED UNIT 5,SAN DIEGO,CA 92136
[6] UNIV MINNESOTA,WHO,CULLABORATING CTR REFERENCE & RES STREPTOCOCCI,DEPT PEDIAT,MINNEAPOLIS,MN 55455
关键词
ANTISTREPTOLYSIN-O; STREPTOCOCCUS-PYOGENES; LIKELIHOOD RATIO; UPPER LIMIT OF NORMAL; RHEUMATIC FEVER; INFECTION;
D O I
10.1016/0895-4356(93)90117-J
中图分类号
R19 [保健组织与事业(卫生事业管理)];
学科分类号
摘要
Single serologic tests may occasionally influence clinicians in making diagnoses. The antistreptolysin 0 (ASO) test is a frequently used tool for detecting recent Streptococcus pyogenes infection and is helpful in the diagnosis of diseases like rheumatic fever. Using data from a 1989 prospective study of 600 healthy male military recruits, in which 43% experienced S. pyogenes upper respiratory tract infection (2-dilution rise in ASO), this report compared two methods of interpreting a single ASO titer. Using the ''upper limit of normal'' (80 percentile) method, recruits with an ASO titer of greater than 400 showed evidence of recent S. pyogenes infection. This method had a sensitivity and specificity of only 65.9 and 81.9% respectively. In contrast to the ''yes-no'' dichotomy of the ''upper limit of normal'' method, the likelihood ratio method statistics were ASO value specific, more consistent with clinical judgment, and better emphasized the caution clinicians must use in interpreting a single ASO test.
引用
收藏
页码:1181 / 1185
页数:5
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