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PubMedDate not supplied

Sterilization: past, present, future.

Globally, sterilization protects more couples from pregnancy than any other contraceptive method. However, use of sterilization has grown only gradually and annual rates of adoption remain low. The high prevalence of sterilization can be explained by its excellent continuation rate, its appeal to a broad age range at the time of adoption, and its long history of availability. International patterns show that sterilization users are concentrated in the two large countries of China and India, but numerous smaller countries also have high proportions of couples using the method. Four personal characteristics differentiate its use within each country: age, parity, residence, and sex. A new projection method indicates that approximately 159 million sterilization adoptions are expected between 1990 and 2000, half of them in China. Most future sterilization users will be found where they have been in the past, due to their concentration in China and India and to the large carry-over of current users in all countries. Projections for sterilization are more dependable than are those for other contraceptive methods, because most current users are young enough to remain in the pool of active users for 10 years. They constitute a large component of the expected total in the year 2000--about 269 million users, or 29 percent of all couples.

Adult↗
PubMed2002

Factors in contraceptive method choice in Bangladesh: goals, competence, evaluation and access.

In this study, we have extended Bulatao's conceptual framework for selecting the determinants of method choice. Attempts have been made to capture Bulatao's dimensions directly rather than through proxies. The results of logistic regression analysis using the 1996-97 BDHS indicate that as the number of living children increases, women prefer non-terminal efficient methods such as the pill and injectable/IUD/implant and depend less on inefficient methods such as condom and permanent methods such as sterilization. With an increase in marital duration and age, women increasingly prefer sterilization as compared with other modern methods. The results may indicate a strong preference for male children among those in the sample, as women increasingly use permanent methods to prevent pregnancy as the number of living male children increases. Condom use increases with education of both women and their husbands, compared with other modern methods, indicating that more educated couples possibly have the greater understanding necessary to use the method. The better educated are significantly less likely to use sterilization. The two indicators of contraceptive evaluation, side effect and convenience of current modern method, are very important considerations in selecting the pill, injectable/IUD/implant, and condom over other modern methods. On the basis of convenience, women are most likely to use the pill over other modern methods, while they are least likely to use sterilization. Condom is the most preferred method on the basis of side effect. On the other hand, sterilization is the least preferred of other modern methods for the same reason. Sterilization is significantly less common among the Muslims, which is likely due to religious reasons, while condom use is significantly less common among non-Muslims. The two indicators of contraceptive access, accessibility/availability of current modern method and cost of current modern method, are very important considerations in pill use, while sterilization is less preferred over other modern methods on the basis of both accessibility/availability and cost. The programmatic factor visit of family planning workers/FWAs significantly increases the likelihood of using the pill compared to other modern methods.

Adolescent↗
PubMed2003

Assessment of sperm functional competence and sperm-egg interaction.

A precise understanding in the functional competence of mammalian sperm is essential to generate clinical advances for the treatment of infertility and novel contraceptive strategies. The fundamental knowledge on the controlling parameters for spermatozoal activation process will help in the identifying the causes in fertilization failure due to male factor as well as in developing male contraceptive methodologies. The defects in the sperm-egg interaction seem to be one of the controlling mechanisms, however, none of the presently available methods for the evaluation of the fertilizing ability of sperm precisely indicates the reason for the failure or the success of sperm entry into egg. Adequate number of motile spermatozoa with normal morphology and timely occurrence of acrosome reaction are presumably the major prerequisites for the penetration through the egg investments. The present communication briefly reviews some of the main features of mammalian sperm which control the success or the failure of fertilization and existing clinical methods indicating the lack of fundamental knowledge on the sub-cellular and molecular aspects of this unique and species-specific cell-cell interaction.

Acrosome Reaction↗
PubMedDate not supplied

Patterns of risk behaviour for patients with sexually transmitted diseases and surveillance for human immunodeficiency virus in Kuala Lumpur, Malaysia.

A study was conducted to determine the feasibility of establishing a sentinel human immunodeficiency virus (HIV) surveillance system involving patients with sexually transmitted diseases attending private clinics and a government sexually transmitted disease clinic in Kuala Lumpur, Malaysia. Information on risk behaviours for HIV infection were also collected. A total of 84 female and 91 male patients were interviewed and tested for HIV infection; 41.7% of the women reported working as prostitutes, other occupations included masseuses, hairdressers, waitresses, salesgirls, receptionists, factory workers, and others. The most common diagnosis was gonorrhoea. Other diagnoses included non-specific genital infection, pelvic inflammatory disease, genital herpes and syphilis. 58.3% of the women had a hundred or more sex partners during the previous month; 99% had 6 or more sex partners. Only 4.8% of female patients had their male partners using condoms most of the time, 11.9% hardly used condoms at all. Of the males, 93.3% were heterosexual, while 6.7% were bisexuals, 41.1% had between 6-20 different partners in the previous year. 78.0% of them had prostitutes as their sex partners most of the time. 41.8% had experiences in Thailand and the Philippines. 73.6% never used condoms, while 19.8% only used condoms rarely. Although all patients were tested negative for HIV antibodies, lot quality assurance sampling methods indicate that the upper limits of prevalences for females and males were 3.5% and 3.3% respectively, at a 5% type I error. The study has shown that it is feasible to carry out a sentinel surveillance programme among STD patients and provided useful baseline data for future comparisons.(ABSTRACT TRUNCATED AT 250 WORDS)

Adult↗
PubMed1995

Barriers to condom use and barrier method preferences among low-income African-American women.

Low-income African-American women (N = 178) entering health clinics completed surveys assessing perceived barriers to condom use for themselves personally and for African-American women generally. Following the survey, each woman received a demonstration of five barrier contraceptive methods and then rated her preference among those methods. The women perceived relatively few personal barriers to use of the male condom but perceived significantly greater barriers for other African-American women (all p < .0001). The male condom was first choice of the largest percentage of women (45%) and last choice of the smallest percentage of women (11%). The male condom was preferred for its convenience, availability, and safety, although the necessity for active cooperation by the male partner was considered a hindrance to using the method. Only 23% of women ranked the female condom as first choice and 35% ranked the female condom as last choice. Reasons for selecting the female condom included preference for a female-controlled method, safety, and protection. However, the female condom was perceived to be uncomfortable, to require the partner's acquiescence, and to interfere with sexual experience. Differences in the women's perceptions of barriers to condom use for themselves and for other African-American women are consistent with Weinstein's theory of optimistic bias. Preferences among barrier methods indicate that further research and product development are needed to develop barrier methods that are female-controlled, do not require the awareness of the male partner, and are safe, comfortable, and convenient.

Adolescent↗