Evaluation of prenatal care information on birth certificates

被引:26
作者
McDermott, J
Drews, C
Green, D
Berg, C
机构
[1] EMORY UNIV,ROLLINS SCH PUBL HLTH,DEPT EPIDEMIOL,ATLANTA,GA 30322
[2] CTR DIS CONTROL & PREVENT,DIV REPROD HLTH,NATL CTR CHRON DIS PREVENT & HLTH PROMOT,ATLANTA,GA
关键词
D O I
10.1046/j.1365-3016.1997.d01-4.x
中图分类号
R1 [预防医学、卫生学];
学科分类号
1004 ; 120402 ;
摘要
Misclassification frequently leads to bias in epidemiological studies, and causes concern for perinatal epidemiologists interested in using birth certificates as a data source. We used a maximum likelihood method to estimate the classification probabilities (conditional probabilities that indicate the probability of classification in a particular category, given the person's true category) of two data sources for a three-category outcome of prenatal care. The probability that women receiving adequate or inadequate care were correctly classified was estimated to be greater than 90%. The probability was much lower (<35%) that women receiving intermediate care were correctly classified. The misclassification of women from the intermediate category resulted in poor predictive values (<70%) of women classified as receiving either adequate or inadequate care. Because of these findings, we combined the adequate and intermediate categories to form a two-category classification system. This revision resulted in higher positive predictive values (>90%) with only a slightly lower classification probability (>85%) for the combined category. We conclude that the degree of accuracy for a two-category classification of prenatal care based upon birth certificate information is acceptable, but we question the accuracy of indices of prenatal care with more than two categories.
引用
收藏
页码:105 / 121
页数:17
相关论文
共 25 条
  • [1] ALEXANDER GR, 1987, AM J PREV MED, V3, P254
  • [2] ALEXANDER GR, 1987, AM J PREV MED, V3, P243
  • [3] *AM COLL OBST GYN, 1985, STAND OBST GYN SERV, P17
  • [4] THE QUALITY OF THE NEW BIRTH CERTIFICATE DATA - A VALIDATION-STUDY IN NORTH-CAROLINA
    BUESCHER, PA
    TAYLOR, KP
    DAVIS, MH
    BOWLING, JM
    [J]. AMERICAN JOURNAL OF PUBLIC HEALTH, 1993, 83 (08) : 1163 - 1165
  • [5] DASCOLI PT, 1993, P 1993 PUBL HLTH C R, P105
  • [6] USE OF 2 DATA SOURCES TO ESTIMATE ODDS RATIOS IN CASE-CONTROL STUDIES
    DREWS, CD
    FLANDERS, WD
    KOSINSKI, AS
    [J]. EPIDEMIOLOGY, 1993, 4 (04) : 327 - 335
  • [7] Efron B., 1993, INTRO BOOTSTRAP, P153
  • [8] METHODOLOGY TO CORRECT FOR DIFFERENTIAL MISCLASSIFICATION
    FLANDERS, WD
    DREWS, CD
    KOSINSKI, AS
    [J]. EPIDEMIOLOGY, 1995, 6 (02) : 152 - 156
  • [9] Fleiss J. L., 1981, STAT METHODS RATES P, P598
  • [10] Floyd L, 1981, J Med Assoc Ga, V70, P871