PT  - JOURNAL ARTICLE
AU  - E. T. Robinson
AU  - J. H. Barber
TI  - Early diagnosis of pregnancy in general practice
DP  - 1977 Jun 01
TA  - The Journal of the Royal College of General Practitioners
PG  - 335--338
VI  - 27
IP  - 179
4099  - http://bjgp.org/content/27/179/335.short
4100  - http://bjgp.org/content/27/179/335.full
SO  - J R Coll Gen Pract1977 Jun 01; 27
AB  - The value of the signs and symptoms of pregnancy and of the pregnancy diagnostic test as predictors of pregnancy was estimated for 1,592 women seen in general practice. The presence of a sign or symptom alone is a poor pointer to a diagnosis of pregnancy. The combination of pairs of features improves the value, the best being breast signs combined with either the presence of signs of pregnancy on vaginal examination or a palpable fundus, both giving predictive values of 0·89. The pregnancy diagnostic test alone, however, had a predictive value of 0·91, a value of 1·00 indicating 100 per cent reliability.