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Nancy Rate

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Journal Article
Demography (1973) 10 (4): 663–672.
Published: 01 November 1973
... excessively low or high, this should be apparent in the resulting birth and pregnancy rates. 27 1 2011 © Population Association of America 1973 1973 Pregnancy Rate Fetal Loss Vital Event Nonwhite Woman Nancy Rate References Berkov , Beth ( 1971 ). Illegitimate Fertility...
Journal Article
Demography (1966) 3 (2): 297–304.
Published: 01 June 1966
... Contraceptive Failure Milbank Memorial Fund Nancy Rate References 1 Sheps M. C. ( 1966 ). On the Person Years Concept in Epidemiology and Demography . Milbank Memorial Fund Quarterly , XLIV ( No. 1 ), 69 – 91 . 10.2307/3349039 2 Potter R. G. ( 1963 ). Additional Measures...
Journal Article
Demography (1973) 10 (3): 459–467.
Published: 01 August 1973
... been included. The application of the model for obtaining a refined index of fecundability and sterility has also been discussed. 27 1 2011 © Population Association of America 1973 1973 Successive Iteration Maternity Data Nancy Rate Monthly Probability Postpartum Amenorrhea...
Journal Article
Demography (1968) 5 (2): 931–940.
Published: 01 June 1968
... is the number of accidental pregnancies multipled by 1,200, and the denominator is the aggregate of all months of exposure contributed by all couples included in the investigation." Pearl's formula assumes a constant preg- nancy rate for a given population in all months following the initiation of contra...
Journal Article
Demography (2001) 38 (1): 59–66.
Published: 01 February 2001
... for the 1980 1984 period for married and cohabiting women. The NSFG estimate of the fertile preg- nancy rate among single women is significantly lower than the rate estimated with the NSFH. This finding causes some concern, but the reason for the difference is not obvious. The NSFH and the NSFG questionnaires...
Journal Article
Demography (1967) 4 (2): 569–575.
Published: 01 June 1967
.... Further, since data are not available on pregnancy wast- age, a corrective factor cannot be subtracted from the actual pregnancy rates. Therefore, it must be recognized that in equating the preg- nancy rate with the birth rate, the number of births which would result from the pregnancies would be lower...
Journal Article
Demography (1964) 1 (1): 106–110.
Published: 01 March 1964
... the biological effec- tiveness of the drug in reducing the preg- nancy rate and (iii) to evolve an economi- cal and effective method of distribution of the oral contraceptive under rural con- ditions. Ill. PLAN OF WORK In designing the trial, the following points were highlighted in order that the results...
Journal Article
Demography (1968) 5 (2): 836–845.
Published: 01 June 1968
... percent for the sample, and is significant at the 0.0001 level. All age groups in the sample declined their preg- nancy rates, with the exception of the 15 to 19 years old group where the increase in abortion compensates the decrease III fertility. The declines are significant for all ages over 25. As we...
Journal Article
Demography (1975) 12 (3): 407–416.
Published: 01 August 1975
... on birth and preg- nancy rates as the previous data suggest must be determined by further analysis which controls on age and stage of child- bearing since the samples may differ somewhat on these key variables which affect strength of intentions, exposure to risk, etc. Nevertheless, there appears...
Journal Article
Demography (1965) 2 (1): 250–275.
Published: 01 March 1965
..., and this was found not to be a function of the higher preg- nancy rates of these groups. They did have higher pregnancy rates, but they also had more unstable expectations, whether a pregnancy occurred or not. This is probably associated with instabil- ity and lack of planning in other life areas as well. Except...
Journal Article
Demography (1977) 14 (2): 223–238.
Published: 01 May 1977
.... The "rates" themselves come from a life table approach which is probably unjustifiable, but the ratios of "rates" will extend to what can be considered the correct life table approach under the assumption that the age of a woman has no relation to how long she waits before reporting a preg- nancy. Of course...
Journal Article
Demography (1976) 13 (1): 65–82.
Published: 01 February 1976
... preg- nancies ending in a miscarriage early enough to obviate an abortion procedure reduce the repeat abortion rate. Chances of a miscarriage forestalling an intended abortion are higher the later the timing of induced abortion or, conversely, the earlier the timing of miscarriage as well...
Journal Article
Demography (2011) 48 (4): 1619–1624.
Published: 15 November 2011
... Fertility in Rural Mozambique...........................1029–1048 Alkema, Leontine, Adrian E. Raftery, Patrick Gerland, Samuel J. Clark, François Pelletier, Thomas Buettner, and Gerhard K. Heilig. Probabilistic Projections of the Total Fertility Rate for All Countries...
Journal Article
Demography (1964) 1 (1): 119–125.
Published: 01 March 1964
... abortos y nacimientos. A un cuando la evidencia no es completemente clara, parece, que este programa ha aumentado grandemente el número total y la tasa de abortos inducidos y ha ocasionado una moderacion única en el crecimiento de poblcaión. Live Birth Spontaneous Abortion Crude Birth Rate Legal...
Journal Article
Demography (1964) 1 (1): 111–118.
Published: 01 March 1964
... of contraceptive effectiveness, birth rates would drop more in the presence of a higher incidence of fetal loss or lower fecundability and in the presence of shorter periods of infecunda- bility associated with any type of preg- nancy. The following calculations from Table 2 illustrate these effects. The per- cent...
Journal Article
Demography (1972) 9 (3): 465–483.
Published: 01 August 1972
... of noncontracept- ing women of age (i) who bear a female child in a single time period (age- specific fertility rates). p = population projection matrix. f3, = proportion of contracepting women of age (i) who bear a female child in a single time period (accidental preg- nancy rates). 468 Y = number...
Journal Article
Demography (1996) 33 (4): 429–442.
Published: 01 November 1996
... documented that disadvantaged minority groups have strik- ingly higher rates of adolescent and premarital childbearing than do whites (Bumpass and McLanahan 1989; Manning and Landale 1996). Numerous studies demonstrate that these fertility behaviors are linked to poverty and to a lack of op- portunities...
Journal Article
Demography (1974) 11 (1): 75–87.
Published: 01 February 1974
... Unmarried Women in the United States . Family Planning Perspectives , 5 , 21 – 35 . 10.2307/2133798 MacMahon Brian , Kovar Mary Grace , & Feldman Jacob J. ( 1973 ). Infant Mortality Rates: Relationships with Mother’s Reproductive History . Washington, D.C. : Government...
Journal Article
Demography (1975) 12 (1): 129–141.
Published: 01 February 1975
..., and 28 or more are apportioned 28.6, 15.9, and 55.5 percent, respectively, in all four standards. The rates reported are conditional rates of pregnancy loss, pertaining to those women whose preg- nancies survive to the beginning of the particular interval. Needed for our analysis are proba- bility...
Journal Article
Demography (1976) 13 (4): 495–505.
Published: 01 November 1976
...- nancy, but the risk of becoming sterile increases during a pregnancy at the same rate as if the pregnancy had not existed. Sterility risks increase with age, and all women.are sterile by age 46.5 years or by the termination of any pregnancy which overlaps that age. 6. Contraception. Within a parity...