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PubMed1990

Effects of maternal birth season on birth seasonality in the Canadian population during the seventeenth and eighteenth centuries.

Birth records of the French-Canadian population for the period 1621-1765 were analyzed retrospectively to examine the effect of maternal birth season on the seasonal distribution of births. Preliminary examination indicated that there was a bimodal pattern in birth seasonality: a major peak in early spring, a trough in early summer, a minor peak in autumn, and a trough around December. Because this seasonality was strongly biased at the level of the first birth by the month of marriage, which was concentrated in November, the seasonality of nonfirst births (n = 32,926) was examined in relation to the four seasons of maternal birth. Mothers born in May-July showed a flatter monthly distribution of nonfirst births at a maternal age of 28 years or more. Analysis of marriage-first birth intervals indicated that mothers who married in August-October showed a lower percentage of immediate conception (intervals of 8-10 months), whereas those mothers born in May-July had a higher percentage of immediate conception. This difference in birth seasonality shown by mothers born in May-July is similar to results from early twentieth-century Japan. Some seasonal infertility factors could have affected the embryos at the earliest stage of pregnancy, modifying a part of the seasonal variation in birth rate.

Birth Intervals↗
PubMed1992

Fertility of male workers exposed to cadmium, lead, or manganese.

The effect of exposure to cadmium, lead, or manganese on male reproductive function was examined in 1988-1989 in Belgian blue-collar workers. The workers were exposed to cadmium in two smelters (n = 83; geometric mean urinary cadmium level = 6.94 micrograms/g of creatinine; mean duration of exposure = 24 years), to lead in a battery factory (n = 74; mean blood lead level = 46.3 micrograms/dl; mean duration of exposure = 10.7 years), or to manganese (manganese dioxide) in a dry alkaline battery plant (n = 70; median atmospheric concentration of total manganese dust = 0.71 mg/m3; mean duration of exposure = 6.2 years). Fertility in these workers and in an unexposed population (n = 138) was assessed by examining the birth experiences of their wives through a logistic regression model. The probability of a live birth was not different between the unexposed workers and the cadmium- or manganese-exposed workers before or after the onset of exposure. While the fertility of the lead-exposed workers was somewhat greater than that of the unexposed before the onset of exposure, a significant decrease in fertility was observed during the period of exposure to the metal (odds ratio = 0.65, 95% confidence interval 0.43-0.98).

Adult↗
PubMed1979

Survey of abortion providers in Seoul, Korea.

A survey of abortion providers in Seoul in late 1977 reveals a threefold increase in the rate of abortion and a greater than threefold rise in the ratio of abortions to live births since 1970. The survey findings also show that the overwhelming proportion of these abortions are performed in private clinics, by obstetrician-gynecologists, during the first trimester. The Seoul figures, which are similar to those of Romania and are higher than those of Japan in the early 1960s, indicate that abortion has contributed substantially to Korea's reduced fertility.

Abortion, Legal↗
PubMed1992

[Analysis of factors influencing the recent decline in birth rate in Tokyo].

This study was undertaken in an attempt to find factors which affected the recent declining birth rate in Tokyo. Vital statistics of the female population, age 20-39, for the period of 1970 through 1985 for Tokyo were compared to national averages. Indices examined were birth rate, percentage of married women, birth rate for married women, and birth rate for married women by live birth order. Results thus obtained were as follows: 1. Birth rates for females aged 20-24 and 25-29 were largely dependent on percentages of married women rather than birth rates for married women both in Tokyo and in the nation as a whole, while the birth rates for females aged 30-34 and 35-39 were more dependent on birth rates for married women. 2. Percentages of married women aged 20-24 and 25-29 decreased during the observation period both in Tokyo and in the nation as a whole. 3. Birth rates for married women aged 30-34 and 35-39 dropped in the first 5 or 10 years of observation in both groups as a result of the reduction in high order live births. Thereafter, the decline changed to an upturn trend. 4. Yearly changes of birth rate, percentage of married women, birth rate for married women, birth rate for married women by live birth order, and birth rate of first child for married women appeared to have the same timing both in Tokyo and in Japan as a whole in each age category.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMedDate not supplied

Abortion in the United States, 1977-1978.

There were 1.32 million legal abortions in the United States in 1977 and a projected 1.37 million in 1978, an increase of four percent between 1977 and 1978 compared with one of 12 percent between 1976 and 1977. In 1978, 29 percent of pregnant women chose to terminate their pregnancies by abortion. Almost three percent of U.S. women of reproductive age obtained an abortion in 1978. From 1967 through 1978, approximately six million women obtained almost eight million legal abortions; about one in eight U.S. women of reproductive age has had a legal abortion. The number of hospitals reporting that they provided abortion services dropped slightly from 1,695 in 1976 to 1,661 in 1977, but the number of nonhospital abortion clinics increased from 448 to 522, and the number of physicians who reported performing abortions in their offices grew from 424 to 533. Between 1976 and 1977, the average number of abortions per hospital facility decreased from 246 to 237, while the average number per nonhospital provider increased from 875 to 879. The percentage of abortions performed in hospitals declined from 35 in 1976 to 30 in 1977, while the percentage reported by free-standing clinics increased from 61 to 66; the percentage performed in physicians' offices remained at four. Ninety-five percent of abortions in 1977 occurred in metropolitan areas, where 75 percent of the women in need of abortion services live. In 1977, there were identified abortion providers in only 23 percent of U.S. counties. Nine percent (more than 118,000) of the women who obtained abortions in 1977 had to travel to another state for services, and many traveled to other, often distant, counties in their home states. One in three abortions in 1977 were obtained by teenagers, and three in four were obtained by unmarried women. Twenty-eight percent of the women estimated to be in need of abortion services in 1977, and 26 percent in 1978, were unable to obtain them. In FY 1977, before Hyde amendment restrictions on government financing of abortions for poor women, 133,000 of the estimated 427,000 Medicaid-eligible women in need of publicly funded abortion services were unable to obtain them.(ABSTRACT TRUNCATED AT 400 WORDS)

Abortion, Legal↗
PubMed1991

Can combined oral contraceptives be made more effective by means of a nursing care model?

This manuscript is a theoretical attempt to show how the Neuman Systems Model can be practically used in combined oral contraceptive counselling by Swedish midwives. Counselling regarding combined oral contraceptives is not solely of a medical nature. There are many dimensions of care, namely sociological, developmental and philosophical. In 1980, the midwife in Sweden was responsible for between 70-80% of counselling in contraceptive methods. To facilitate the contraceptive counselling by the midwives, the Neuman Systems Model can be used as a theoretical aid. In the present report, the midwife's oral contraceptive counselling is described at an individual level with primary prevention. It is concluded that, from a theoretical standpoint, it is not possible to predict how the Neuman Systems Model, as a theoretical aid for the midwife, can increase the effectiveness of the birth control pill in preventing pregnancy. Research about the use of the nursing care model in oral contraceptive counselling should be carried out.

Adult↗
PubMedDate not supplied

Abortion in Europe, 1920-91: a public health perspective.

This article grew out of a keynote address prepared for the conference, "From Abortion to Contraception: Public Health Approaches to Reducing Unwanted Pregnancy and Abortion Through Improved Family Planning Services," held in Tbilisi, Georgia, USSR in October 1990. The article reviews the legal, religious, and medical situation of induced abortion in Europe in historical perspective, and considers access to abortion services, attitudes of health professionals, abortion incidence, morbidity and mortality, the new antiprogestins, the characteristics of abortion seekers, late abortions, postabortion psychological reactions, effects of denied abortion, and repeat abortion. Special attention is focused on the changes occurring in Romania, Albania, and the former Soviet Union, plus the effects of the new conservatism elsewhere in the formerly socialist countries of central and eastern Europe, particularly Poland. Abortion is a social reality that can no more be legislated out of existence than the controversy surrounding it can be stilled. No matter how effective family planning services and practices become, there will always be a need for access to safe abortion services.

Abortion, Induced↗
PubMed1991

Abortion in South Australia, 1971-86: an update.

Official statistics on abortion in South Australia for the period 1971-86 are analysed in terms of incidence, age of patients and nuptiality, reasons for abortion, method of termination, period of gestation, previous abortions and concurrent sterilisation. Demographic implications are discussed and recommendations are made for more education and counselling, especially for younger and unmarried women for whom the incidence of abortion seems to be rising.

Abortion, Induced↗
PubMed1991

Trends in the contraceptive practices of women seeking abortions in the 1980s.

The demographic features and contraceptive practices of 1000 women attending Parkview clinic of Wellington Hospital for termination of pregnancy were studied over an eight month period in 1988-9. Comparisons were made with a previous study at the same clinic in 1980-1. The overall abortion rate has increased from 6.8/1000 women in the Wellington statistical area in 1981 to 9.8 in 1989. The proportion of Pacific Island and Asian women presenting for abortions is high and has increased disproportionately between 1981 and 1989. The abortion rate has also increased in lower socioeconomic groups in 1989. The proportion of women using contraception at the time of conception increased from 50% in 1981 to 68.5% in 1989. The methods used by women presenting for abortion have changed significantly. There has been an increase in the proportion of women using condoms (from 13.3% to 36.2%) and the oral contraceptive pill from (14% to 21.4%).

Abortion Applicants↗
PubMedDate not supplied

Contraceptive paths toward the reduction of unintended pregnancy and abortion.

Based on data from the 1982 National Survey of Family Growth, exposure to the risk of unintended pregnancy is classified by use of specific contraceptive methods and by nonuse, and average rates of unintended pregnancy are estimated for each type of exposure. Three hypothetical models of improved contraceptive practice are then applied to the data for all women and for age, race and marital-status subgroups. The first two models assume increases in the use of some existing contraceptive methods, but only the second model additionally assumes the introduction of new methods. The third model assumes the complete elimination of nonuse of contraception. These models yield different estimates of the reduction in unintended pregnancy rates which are illustrated for various age-groups, for whites and blacks and for married and unmarried women. Among all women aged 15-44, the changes assumed by Model I imply a 32 percent reduction in unintended pregnancy; Model II implies a 56 percent reduction; and Model III implies a 57 percent reduction. The implied reductions in abortion are in a similar range.

Abortion, Induced↗