Prediction of ectopic pregnancy in women with a pregnancy of unknown location

Ultrasound in Obstetrics and Gynecology

Volumn 29, Issue 6, 2007, Pages 680-687

  Condous, G ^a,c   Van Calster, B ^b   Kirk, E ^a   Haider, Z ^a   Timmerman, D ^b   Van Huffel, S ^b   Bourne, T ^a  

^a ST GEORGE'S UNIVERSITY OF LONDON   (United Kingdom)

^b UNIVERSITY HOSPITALS LEUVEN   (Belgium)

^c UNIVERSITY OF SYDNEY   (Australia)

Author keywords

Ectopic pregnancy; Human chorionic gonadotropin ratio; Logistic regression; Pregnancy of unknown location; Quadratic effect

Indexed keywords

CHORIONIC GONADOTROPIN;

ARTICLE; CONTROLLED STUDY; DATA ANALYSIS; DISEASE CLASSIFICATION; ECTOPIC PREGNANCY; FEMALE; GESTATIONAL AGE; HUMAN; LOGISTIC REGRESSION ANALYSIS; MAJOR CLINICAL STUDY; MATHEMATICAL MODEL; PREDICTION; PREGNANCY; PRIORITY JOURNAL; PROGESTERONE BLOOD LEVEL; STATISTICAL ANALYSIS; TECHNIQUE; TRANSVAGINAL ECHOGRAPHY; ULTRASOUND;

CHORIONIC GONADOTROPIN; FEMALE; HUMANS; LOGISTIC MODELS; MODELS, BIOLOGICAL; MODELS, STATISTICAL; MULTIVARIATE ANALYSIS; PREDICTIVE VALUE OF TESTS; PREGNANCY; PREGNANCY OUTCOME; PREGNANCY, ECTOPIC; PROSPECTIVE STUDIES; SENSITIVITY AND SPECIFICITY;

EID: 34250891999     PISSN: 09607692     EISSN: 14690705     Source Type: Journal    
DOI: 10.1002/uog.4015     Document Type: Article

References (19)

1. Condous G, Lu C, Van Huffel S, Timmerman D, Bourne T. Human chorionic gonadotrophin and progesterone levels for the investigation of pregnancies of unknown location. Int J Gynecol Obstet 2004; 86: 351-357.
2. Banerjee S, Aslam N, Woelfer B, Lawrence A, Elson J, Jurkovic D. Expectant management of early pregnancies of unknown location: a prospective evaluation of methods to predict spontaneous resolution of pregnancy. BJOG 2001; 108: 158-163.
3. Condous G, Okaro E, Khalid A, Timmerman D, Lu C, Zhou Y, Van Huffel S, Bourne T. The use of a new logistic regression model for predicting the outcome of pregnancies of unknown location. Hum Reprod 2004; 19: 1900-1910.
4. Kadar N, Caldwell BV, Romero R. A method of screening for ectopic pregnancy and its indications. Obstet Gynecol 1981; 58: 162-166.
5. Warren WB, Timor-Tritsch IE, Peisner DB, Raju S, Rosen MG. Dating the early pregnancy by sequential appearance of embryonic structures. Am J Obstet Gynecol 1989; 161: 747-753.
6. Condous G, Okaro E, Khalid A, Lu C, Van Huffel S, Timmerman D, Bourne T. The accuracy of transvaginal ultrasonography for the diagnosis of ectopic pregnancy prior to surgery. Hum Reprod 2005; 20: 1404-1409.
7. Condous G, Kirk E, Van Calster B, Van Huffel S, Timmerman D, Bourne T. Failing pregnancies of unknown location: A prospective evaluation of the human chorionic gonadotrophin ratio. BJOG 2006; 113: 521-527.
8. Agresti A. An introduction to categorical data analysis. Wiley & Sons: New York, 1996.
9. Khan KS, Chien PF, Dwarakanath LS. Logistic regression models in obstetrics and gynecology literature. Obstet Gynecol 1999; 93: 1014-1020.
10. Hanley JA, McNeil B. The meaning and use of the area under a receiver operating characteristic (ROC) curve. Radiology 1982; 143: 29-36.
11. DeLong ER, DeLong DM, Clarke-Pearson DL. Comparing the areas under two or more correlated receiver operating characteristic curves: A nonparametric approach. Biometrics 1988; 44: 837-845.
12. Kadar N, Freedman M, Zacher M. Further observations on the doubling time of human chorionic gonadotropin in early asymptomatic pregnancies. Fertil Steril 1990; 54: 783-787.
13. Condous G, Kirk E, Lu C, Van Calster B, Van Huffel S, Timmerman T, Bourne T. There is no role for uterine curettage in the contemporary diagnostic work-up of women with a pregnancy of unknown location. Hum Reprod 2006; 21: 2706-2710.
14. Ankum WM, Van der Veen F, Hamerlynck JV, Lammes FB. Laparoscopy: a dispensable tool in the diagnosis of ectopic pregnancy? Hum Reprod 1993; 8: 1301-1306.
15. Ankum WM, Van der Veen F, Hamerlynck JV, Lammes FB. Transvaginal sonography and human chorionic gonadotrophin measurements in suspected ectopic pregnancy: a detailed analysis of a diagnostic approach. Hum Reprod 1993; 8: 1307-1311.
16. Condous G, Okaro E, Khalid A, Lu C, Van Huffel S, Timmerman D, Bourne T. A prospective evaluation of a single visit strategy to manage pregnancies of unknown location. Hum Reprod 2005; 20: 1398-1403.
17. Hahlin M, Thorburn J, Bryman I. The expectant management of early pregnancies of uncertain site. Hum Reprod 1995; 10: 1223-1227.
18. Banerjee S, Aslam N, Zosmer N, Woelfer B, Jurkovic D. The expectant management of women with pregnancies of unknown location. Ultrasound Obstet Gynecol 1999; 14: 231-236.
19. Kirk E, Condous G, Haider Z, Lu C, Van Huffel S, Timmerman D, Bourne T. The practical application of a mathematical model to predict the outcome of pregnancies of unknown location. Ultrasound Obstet Gynecol 2006; 27: 311-315.