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J R Coll Gen Pract. 1977 June; 27(179): 335–338.
PMCID: PMC2158084

Early diagnosis of pregnancy in general practice

Abstract

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.

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Selected References

These references are in PubMed. This may not be the complete list of references from this article.
  • Barber JH, Robinson ET. The diagnosis of pregnancy in general practice. J R Coll Gen Pract. 1975 Jul;25(156):511–519. [PMC free article] [PubMed]
  • Krieg AF, Gambino R, Galen RS. Why are clinical laboratory tests performed? When are they valid? JAMA. 1975 Jul 7;233(1):76–78. [PubMed]

Articles from The Journal of the Royal College of General Practitioners are provided here courtesy of Royal College of General Practitioners