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- W2287181544 abstract "Data on the aspirated contents of 1440 clinical menstrual regulation procedures were used as a basis for calculating the probability of pregnancy by the duration of amenorrhea. The Pregnosticon pregnancy test did not exhibit adequate sensitivity during the first 14 days of a missed menstrual period (53.5% positive results confirmed). The specificity (confirmed negative results) of the test was 91.4%. The probability of pregnancy steadily increased with each day of the missed menstrual period for all women (35% at Day 5 to 65% at Day 14). The probability of pregnancy for women with a positive pregnancy test did not increase as sharply but the probability was higher (80% at Day 5 to 93% at Day 14). The probability curve for women with negative pregnancy tests was low and flat (25% at Day 5 to 32% at Day 14). Women over 25 years of age had approximately a 10% higher probability of pregnancy on any given day of delayed menses than younger women while parous women showed approximately a 7% greater probability of pregnancy than nulliparous women. The reporting of days of delayed menses appeared to be more sensitive in estimating pregnancy than the duration of amenorrhea." @default.
- W2287181544 created "2016-06-24" @default.
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- W2287181544 date "1975-01-01" @default.
- W2287181544 modified "2023-09-23" @default.
- W2287181544 title "Estimated incidence of pregnancy by duration of amenorrhea." @default.
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