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Biomedical subjects

B J Oddens

Publications and source records attributed to B J Oddens.

At least 19 recordsLinked to original sources
PubMed2001

Factors influencing women's satisfaction with birth control methods.

OBJECTIVES: To study the extent to which variation in satisfaction with a birth control method is explained by variation in perceived physical and psychological effects. METHODS: A population survey among 1466 German women was carried out. Within the overall sample, 1303 women had ever used oral contraceptives, 996 had relied on condoms, 342 had ever used intrauterine devices (IUD), 428 had used natural family planning and 139 women were sterilized. For each method a woman had ever used, she answered questions about satisfaction with the method, concerns about getting pregnant or suffering health risks during use, ease of use, changes in sexual relationship, relationship with the partner and mood. Past and current users of oral contraceptives and IUDs and sterilized women additionally reported changes in menstrual bleeding. RESULTS: Variation in satisfaction was, for a large part, explained by variation in health concerns among oral contraceptive users, by variation in perceived changes in the quality of the sexual relationship among condom users, by perceived ease of use among IUD users and sterilized women, and by variation in pregnancy concern among natural family planning users. CONCLUSION: Counselling about these perceived experiences is most likely to result in greater satisfaction and therefore improved compliance.

Adult↗
PubMed2000

Determinants of long-term hormone replacement therapy and reasons for early discontinuation.

OBJECTIVE: To identify factors associated with long-term hormone replacement therapy (HRT) and reasons for early discontinuation of it. METHODS: A cross-sectional study was conducted in four United Kingdom group general practices. Six hundred fifteen past or present HRT users (representing a response rate of 66%) responded to questionnaires on HRT and potential determinants of long-term use. Main outcome measures were long-term HRT use (at least 6 years) as opposed to short-term use (at most 2 years) and self-reported reasons for discontinuation. Odds ratios (ORs) of long-term use were adjusted for age and other variables, in the same groups, calculated by logistic regression and 95% confidence intervals (CIs). RESULTS: Ovariectomy (OR 2.59, 95% CI 1.12, 5.97), hysterectomy (OR 2.28, 95% CI 1.37, 3.79), previous oral contraceptive use (OR 1.76, 95% CI 1. 03, 3.01), HRT prescription to prevent osteoporosis (OR 1.81, 95% CI 1.04, 3.13), opinion that HRT prevents health problems (OR 3.22, 95% CI 1.57, 6.63), opinion that HRT is associated with health risks (OR 0.23, 95% CI 0.08, 0.65), and opinion that HRT has cosmetic benefits (OR 2.52, 95% CI 1.45, 4.40) were statistically significantly associated with long-term HRT. Women surveyed most often reported side effects and weight gain (each about 30%) as reasons for discontinuation, followed by possible health risks and dislike of menstrual bleeding or hormones (each about 15%). CONCLUSION: Ovariectomy, hysterectomy, and opinions about benefits and disadvantages of HRT were the most important determinants of long-term use, whereas women themselves mentioned side effects and weight gain most frequently as reasons for discontinuing it.

Adult↗
PubMed1999

Women's satisfaction with birth control: a population survey of physical and psychological effects of oral contraceptives, intrauterine devices, condoms, natural family planning, and sterilization among 1466 women.

User satisfaction and the physical and psychological effects of five commonly used contraceptive methods were investigated in a population survey among 1466 West German women. The focus was on effects attributed by current and past users to these methods, rather than objectively assessed effects, to shed further light on personal experiences that are highly relevant to the user but often remain unknown to prescribers and unreported in the medical literature. Within the overall sample, 1303 women were surveyed concerning their current or past use of oral contraceptives (OC), 996 regarding condoms, 342 with respect to intrauterine devices (IUD), 428 in regard to natural family planning (NFP), and 139 in relation to sterilization (respondents completed questions about each method used). It emerged that satisfaction was greatest with sterilization (92% of users), followed by OC (68% of ever users), IUD (59%), NFP (43%), and condoms (30%). Almost one in three NFP users had experienced an unwanted pregnancy during use of this method, as compared with one in 20 OC and condom users. The majority of users reported no mood changes during use of the methods studied. The percentages reporting negative mood changes (various items were scored) were up to 16% among OC users, 23% among condom users, and 30% among NFP users. The latter observations suggested that subjective side effects of a contraceptive agent on mood generally reflected, at least in part, the user's sense of confidence in the method concerned (notably, with regard to efficacy and safety). Oral contraceptives, IUD, and sterilization had a broadly positive impact on sex life, whereas that of condoms was often negative. Whereas OC users often reported less heavy and painful menstruation (in up to 56% of cases), IUD were associated with heavier, prolonged, and more painful menstruation (in up to 65% of cases), as also was sterilization, although to a lesser extent (in up to 32% of cases). Overall, the study findings indicated that OC and sterilization had less negative impact on physical and psychological functioning than the other methods studied, in contrast to what the general public often believes.

Adult↗
PubMed1999

Preferred frequency and characteristics of menstrual bleeding in relation to reproductive status, oral contraceptive use, and hormone replacement therapy use.

This study addresses attitudes towards changes in menstrual bleeding patterns caused by oral contraceptives (OC) or hormone replacement therapy (HRT) and preferred changes in bleeding pattern with and without use of OC or HRT in relation to reproductive age group. Data were collected by means of telephone interviews with 325 women in each of four age groups (15-19, 25-34, 45-49, and 52-57 years). In total, 80.5% of currently menstruating women preferred one or more changes in bleeding pattern such as less painful, shorter, or less heavy periods, or amenorrhea. The majority of the menstruating women in all age groups preferred to have a bleeding frequency of less than once a month or never, whether the bleeding was spontaneous or induced by OC. In the case of HRT, amenorrhea was most preferred. These findings with respect to preferred bleeding frequency and OC may have important implications for health care providers and for future contraception development.

Adolescent↗
PubMed1999

Psychosocial experiences in women facing fertility problems--a comparative survey.

In a survey involving 281 patients awaiting assisted reproduction treatment at five centres in three countries, and 289 population controls, we investigated whether the patients had experienced more negative emotional feelings and negative emotional impact during periods when they were attempting to conceive as compared with the controls, and whether there was any difference in their well-being at the time of consultation. The study was performed in the context of currently divergent views as to the burden of fertility problems. The survey was carried out using questionnaires of the self-administration type. Women with fertility problems did in fact consistently report a higher prevalence of negative emotions than the controls with reference to the periods during which they had been trying to conceive. Patients reported more changes in interpartner relationships (either negative or positive). Sexuality was negatively affected among the patients. At the time of consultation, the patients had less favourable scores than the controls on scales for depressed mood, memory/concentration, anxiety and fears, as well as for self-perceived attractiveness. One in four (24.9%) of the patients had scores indicating depressive disorders as compared with only 6.8% of the controls. Current well-being was even more markedly affected in patients with previous unsuccessful in-vitro fertilization (IVF) experience. The 'infertility' life event was perceived as severe by both patients and controls. Both prior to consultation and during diagnosis and treatment, women with fertility problems had a higher prevalence of reported negative psycho-emotional experiences than women without fertility problems.

Adult↗
PubMed1998

A scenario study of oral contraceptive use in Japan. Toward fewer unintended pregnancies.

A scenario study was conducted to assess the extent to which the unintended pregnancy rate in Japan, where oral contraceptives (OC) have not been legalized for family planning purposes and couples rely mainly on condoms, might change if more women were to use OC. Because current rates of unintended pregnancy and abortion in Japan are not known, data provided by the 1994 Japanese National Survey on Family Planning were used to construct scenarios for national contraceptive use. Annual failure rates of contraceptive methods and nonuse were applied to the contraceptive use scenarios, to obtain estimates of the annual number of contraceptive failure-related pregnancies. Subsequently, contraceptive practice situations assuming higher OC use rates were defined, and the associated change in the number of contraceptive failure-related pregnancies was estimated for each situation. It emerged that OC use rates of 15% decreased the expected number of unintended pregnancies by 13%-17%, whereas use rates of 25% resulted in decreases of 22%-29% and use rates of 50% in decreases of 45%-58%. The findings were reasonably robust to variation in the assumptions that were made. In conclusion, each theoretical percentage increase in the OC use rate in Japan was found to lead to a roughly equivalent percentage decrease in the number of unintended pregnancies.

Adolescent↗
PubMed1997

Hormone replacement therapy among Danish women aged 45-65 years: prevalence, determinants, and compliance.

OBJECTIVE: To study the prevalence and determinants of consultation for climacteric complaints and the prescription, commencement, and continuation of hormone replacement therapy (HRT) among women aged 45-65 years. METHODS: A cross-sectional national survey was conducted in Denmark in November 1994 among 1459 women. A total of 1015 women (response rate 69.6%) agreed to participate and provided questionnaire data. RESULTS: Of the women who had experienced climacteric complaints, 67.4% (95% confidence interval [CI] 63.3, 71.4%) had consulted a physician. More women consulted if their complaints were severe rather than slight-to-moderate (odds ratio [OR] 6.46). Within the total sample, 33.4% of the women had been prescribed HRT at some time, and 94.1% of these women actually had started the treatment. Of the women who started the treatment, 66.3% reported that they still were using HRT at the time of the survey. The current HRT use rate among all respondents was 18.4% (95% CI 16.1, 20.9%). Women with severe or slight-to-moderate climacteric complaints more often reported having had HRT prescribed than women without complaints (OR 23.2 and 5.80, respectively). Furthermore, women who had had a hysterectomy with bilateral oophorectomy more often reported use than women with an intact uterus (OR 10.0). Hormone replacement therapy prescription was associated only weakly with osteoporosis concerns (OR 1.74). Its continuation decreased with age, was higher after hysterectomy and among women who regularly participated in sports or exercised, but was not (P > .05) related to osteoporosis concerns. Age-specific HRT continuation rates decreased among users who reported withdrawal bleeding (P < .05) but not among users who did not experience such bleeding (P > .05). CONCLUSION: In this survey, HRT had been used by one in three women at menopause, mainly for the alleviation of climacteric complaints and hardly ever because of osteoporosis concerns. Although it might be expected that HRT users who are concerned about developing osteoporosis in later life would be likely to continue the treatment for longer than other users, the study results did not bear this out. Continuation depended mainly on having had a hysterectomy and participation in sports and was higher among users with an intact uterus if they had had no withdrawal bleeding.

Age Factors↗
PubMed1997

Determinants of contraceptive use among women of reproductive age in Great Britain and Germany. I: Demographic factors.

Multifactorial analyses of data from representative British and German national contraception surveys were used to examine the principal demographic determinants of contraceptive use by women. Contraceptive use appeared to be determined mainly by reference to 'reproductive status' (the combined impact of age, marital status, parity and future child wish). Women who were postponing pregnancies were using oral contraceptives, whereas those who wanted no more children relied more on intrauterine devices or sterilisation. Differences between the countries suggested that the choice of contraceptive method was influenced by health care policy, the organisation of the relevant services and differential provider preferences. The contraceptive method used was also related to having occasional rather than steady sexual partners (more condom use), lower educational level (less oral contraceptive use) and frequent church attendance (greater use of condoms and periodic abstinence). Contraception decisions appeared to follow a fixed pattern, based more on a couple's demographic situation (reproductive status, country, educational level and religious beliefs) than on the characteristics of the contraceptive methods. This resulted in an unnecessarily restricted choice of methods.

Adolescent↗
PubMed1997

Determinants of contraceptive use among women of reproductive age in Great Britain and Germany. II: Psychological factors.

Psychological determinants of contraceptive use were investigated in Great Britain and Germany, using national data obtained in 1992. It was hypothesised that current contraceptive use among sexually active, fertile women aged 15-45 was related to their attitude towards the various contraceptive methods, social influences, perceptions of being able to use a method correctly and consistently, a correct estimation of fertility, and communication with their partner. Effects of age and country were also taken into account. The attitude of respondents towards the various contraceptive methods was ambivalent and no method was seen as ideal. On medical methods (OCs, IUDs and sterilisation) many respondents expressed doubts as to their safety for health. Social influences most frequently concerned the use of OCs. Respondents considered themselves able to use oral contraceptives correctly, but expressed general fear about intrauterine devices and sterilisation, and many women believed they were not able to use condoms and periodic abstinence consistently. Multifactorial analyses revealed that current contraceptive use was principally determined by social influences, attitude and self-efficacy with respect to medical methods. Age and country, and, for use of unreliable methods, fertility awareness also played a role. Communication with the partner was less relevant. Contraceptive choice (and the use of non-medical methods) depended greatly on encouragement to use and being in favour of medical methods. A lack of social support for use of medical methods and a negative attitude towards them was related to higher use rates of condoms, periodic abstinence, withdrawal and reliance on 'luck'. In the case of withdrawal and/or no method, underestimation of fertility played an additional role. Contraceptive choice appears to be determined more by a general like or dislike of medical methods rather than on a weighing of the merits of individual available methods.

Adolescent↗
PubMed1996

Female voice changes around and after the menopause--an initial investigation.

The views of 48 female and 24 male professional singers aged 40-74 years were sought regarding the occurrence of possible voice changes in around the fifth decade of life. The changes actually experienced were investigated to determine whether women's and men's voice changes were different, which might indicate that the menopause had an impact on the female voice. Respondents were approached via personal contacts and completed anonymous questionnaires that were returned by mail. Given the delicate nature of the study topic, no information was obtained on non-responders. Seventy-seven percent of the female singers and 71% of the men were of the opinion that the voice generally underwent changes at around the age of 50. The female singers placed greater emphasis on problems affecting the high registers and voice control than the men. Overall, 29% of the women had actually experienced negative voice changes at around age 50, as compared with 38% of the men. Both sexes reported huskiness, but the women seemed to have more frequent problems with voice emission, voice control and reaching their highest registers. In addition, 27 women reported that they had experienced voice changes during menstruation and five women stated that these had occurred during use of the oral contraceptive pill, which may have reflected the impact of other hormone-related factors. Despite the limitations of this initial investigation (the sample was small and selective), the broad findings indicated that the female voice undergoes specific changes at around the time of the menopause.

Adult↗
PubMed1996

Endometrial thickness assessed by transvaginal ultrasound insufficiently predicts occurrence of hyperplasia during unopposed oestrogen use.

In the present study, unopposed oestrogens were given to 184 non-hysterectomized women, for a duration varying from four weeks to 24 months, while the endometrial responses were monitored by transvaginal sonography (TVS) and backed up by endometrial sampling (conducted when the endometrial thickness reached 8 mm (double layer) or more, vaginal bleeding occurred during oestrogen administration, or after one year of unopposed oestrogen use). In cases where the endometrial thickness reached 8 mm or more, progestogens were administered for 12 days. In 64% of the women, administration of progestogen could be postponed until at least the fourth month of treatment under the pre-defined decision criteria. Eleven percent of the patients used oestrogens continuously during the two year study period, without any need of additional progestogen. In total, 338 endometrial biopsies were performed; 16 cases of hyperplasia were detected. In three cases, the corresponding endometrial thickness was below 8 mm (in one case, 5 mm). Endometrial thickness could not consistently predict occurrence of hyperplasia. In eight cases, hyperplasia occurred within 4 months of treatment, and in four cases, within only 2 months (of which only one case could possibly be attributed to previous hormone use and none to endogenous oestrogen production). The rapid occurrence of hyperplasia should be taken into account in studies of quarterly progestogen administration with hormone replacement therapy. It is concluded that postponement of progestogen administration with hormone replacement therapy under guidance of TVS only (without biopsies) would not be adequately safe to be recommended for clinical practice.

Adult↗
PubMed1996

Transvaginal ultrasonography and endometrial changes in postmenopausal breast cancer patients receiving tamoxifen.

OBJECTIVES: To assess an estrogenic effect of tamoxifen on the uterus and to evaluate the usefulness of transvaginal ultrasonography for identifying tamoxifen-induced endometrial pathology. METHODS: One hundred and two postmenopausal breast cancer patients without gynecological symptoms were examined by transvaginal ultrasonography. Forty-eight patients were treated with tamoxifen and 54 patients served as reference. An endometrial thickness of > or = 6 mm (double-layer) was used as cut-off point for further hysteroscopic and histologic examination. RESULTS: Thirty percent of the women taking tamoxifen had evidence of an abnormal postmenopausal endometrium compared with 6% in the reference group (P = 0.005). Those patients receiving tamoxifen had a significantly thicker endometrium (median 6.0 mm versus 2.0 mm; P < 0.001), a larger uterine volume (median 93 cm3 versus 72 cm3; P = 0.03) and more uterine fluid (12% versus 2%; P = 0.005). Furthermore, an ultrasonographic suspect 'Swiss-cheese' endometrial pattern was noted in almost a quarter of the patients treated with tamoxifen, but this was clearly not associated with intracavitary pathology. CONCLUSIONS: Our data indicate that tamoxifen stimulates the uterine body and endometrium. The data also indicate that the ultrasonographic endometrial appearance during tamoxifen therapy may be misleading and that a high percentage (46%) of false-positive results occur. Therefore, in asymptomatic postmenopausal breast cancer patients taking tamoxifen, the findings on ultrasonography should be interpreted with caution.

Adult↗
PubMed1996

Contraceptive use and attitudes in Italy 1993.

Surveys conducted between 1979 and 1991 indicated that contraceptive practice in Italy underwent rapid changes over that period. In order to assess current contraceptive use and attitudes, a survey was conducted among a random sample of 2000 Italian women aged 15-45 years. Replies were received from 1542 women (77.1%). Of the self-defined non-sterile, sexually active women who wished to avoid pregnancy, 30.3% were using oral contraceptives, 8.1% an intrauterine device, and 1.1% sterilization, while 29.6% were using traditional methods, principally coitus interruptus. In reply to questions about the relative advantages and disadvantages of various contraceptive methods, women expressed worries with respect to the safety of oral contraceptives, intrauterine devices and sterilization. Relatively high percentages of women answered 'do not know' with respect to the various aspects of intrauterine devices, periodic abstinence and sterilization that were investigated. In view of the findings of previous studies, the current data obtained suggested that traditional methods are being gradually displaced by modern methods in Italy. Nevertheless, the use of traditional contraceptive is widespread, the same probably being true of inconsistent use of condoms. Furthermore, lack of information on the contraceptive options available seems to be a central issue in Italy.

Adolescent↗
PubMed1996

Contraceptive practice and attitudes in Sweden 1994.

OBJECTIVE: To investigate current contraceptive practice in Sweden and Swedish women's attitudes towards various contraceptive methods. METHODS: In 1994, a random sample of Swedish women (n = 2330), aged 15-45 years (stratified according to age and geographic distribution), were invited by telephone to participate in the study. Women (n = 1788) who accepted the invitation to participate were sent a postal questionnaire. RESULTS: Completed questionnaires were returned by 1422 women (overall response rate: 61.0%). The sample was somewhat skewed towards higher educational level, but in other demographic respects no great deviations from the parent population were observed. The distribution of contraceptive methods in fertile, sexually active women who wished to avoid pregnancy was as follows: oral contraceptives (OCs) 33%, OC plus barrier method 5%, intrauterine device 21%, barrier methods 23%, sterilization 5% (female 3%; male 2%) and injectable steroids 2%. The overall pattern of contraceptive use in women aged 15-45 years had changed very little compared to results of a similar survey performed in 1987. However, the use of less effective methods (periodic abstinence, coitus interruptus and no method grouped together) was considerably lower among teenagers in 1994 (3%) than in 1987 (18%). The use of these traditional methods was still high in women aged over 35 years (15-17%). A large number of women considered medical methods of contraception to be reliable and easy to use but many were concerned about the safety for health of medical methods. CONCLUSIONS: Contraceptive practice changed towards more frequent use of medical, effective methods among young Swedish women, but not in the total female population. The latter was among others related to the relatively high use rates of less effective methods among women aged over 35. Women were concerned about the health safety of medical methods and relatively low percentages of women reported having received advice from health care professionals to use effective methods.

Adolescent↗
PubMed1994

The dynamics of oral contraceptive use in The Netherlands 1990-1993.

Data from an ongoing series of surveys on contraceptive use in the Netherlands were analyzed with respect to the percentages of oral contraceptive (OC) users who annually started use, discontinued use or switched to another OC type. The surveys had been conducted between 1990 and 1993 among samples of women aged 15-49 who belonged to a survey panel. Response rates of the surveys were 89-90% and the sample sizes ranged from 4560 to 4621 women. The assessed OC use rates reflected those of the Dutch population reasonably well. Of all respondents who had used OCs during the 12 months prior to the surveys, 12-15% discontinued use within this period, mainly in order to get pregnant, 12-16% were starters and 9-14% switchers. Of all starters 37% switched to another OC type within the first 12 months after starting. Switching was mainly related to the experience of perceived side-effects and wishes for better cycle control. The results highlighted the relevance of closely monitoring the individual woman's satisfaction with her OC. Since OC use appeared in many cases to be characterized by an active seeking for the most acceptable OC type, a wide range of OC types available and the development and introduction of new types is highly relevant for tailoring contraceptive use to individual needs.

Adolescent↗
PubMed1994

Contraceptive use and attitudes in Great Britain.

In order to update current knowledge on contraceptive use and attitudes in Great Britain (i.e. England, Scotland and Wales), a survey was conducted among 1753 randomly selected British women aged 15-45. Replies were received from 967 women (55.2%). Seventy-three percent (73%) of fertile, sexually active women who wished to avoid pregnancy were using reliable methods of contraception, viz. oral contraceptives (OCs), intrauterine devices (IUDs) or sterilization. However, it was found that adolescents and women over 40 who wished to avoid pregnancy were, nevertheless, especially likely not to be using any contraceptive method at all. The women surveyed were concerned about weight gain, cardiovascular and cancer risks associated with OC use, and infection and infertility risks associated with IUD use. Sixty percent (60%) perceived sterilization as a major and risky surgical operation. It was concluded that contraceptive practice in Britain had not improved greatly in recent years. The latest scientific findings regarding the true advantages and disadvantages of OCs, IUDs and sterilization, therefore, need to be brought to the attention of the lay public more effectively. Special efforts need to be directed towards providing adolescents and women over 40 with proper information. Physicians and the mass media could play a considerable role in this respect.

Adolescent↗