Kazuyo Machiyama
Biographic Data
| ID | 1511641 |
|---|---|
| NAME | Kazuyo Machiyama |
| GIVEN NAMES | Kazuyo |
| FAMILY NAME | Machiyama |
| SIGNATURE | MACHIYAMA K |
| AFFILIATIONS | London School of Hygiene & Tropical Medicine |
| ORCID | 0000-0003-4369-3954 |
| VERIFIED | Yes |
| TOTAL WORKS | 11 |
| TOTAL CITATIONS | 75 |
| AUTHOR COUNT | 11 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2014 |
| LATEST PUBLICATION YEAR | 2023 |
| H-INDEX | 5 |
Misconceptions, Misinformation, and Misperceptions
Beliefs about contraception are commonly conceptualized as playing an important role in contraceptive decision‐making. Interventions designed to address beliefs typically include counseling to dispel any “myths” or “misconceptions.” These interventions currently show little evidence for impact in reducing beliefs. This commentary delves into the problems associated with using implicitly negative terminology to refer to contraceptive beliefs, whic…
Exploring the Demand‐Side Factors Associated with the Use of Implants in Kenya
We explore the demand‐side factors associated with the use of implants in Kenya given the notable rapid increase in uptake of the method in the country. Data are from a longitudinal study conducted among married or cohabiting women aged 15–39 years at the time of recruitment in one rural (2,424 women) and one urban (2,812 women) site. Analysis entails descriptive statistics and estimation of multivariate logistic regression models. The results sh…
Fertility preferences and subsequent childbearing in Africa and Asia
Survey data on fertility preferences have played a central but controversial role in fertility research and advocacy for family planning. We summarize evidence from longitudinal studies in 28 Asian and African populations on the relationship between preferences and subsequent childbearing. While we found no consistent association between women's desire to delay childbearing and subsequent fertility, the baseline desire of women to stop childbeari…
Factors influencing satisfaction with oral contraceptive pills and injectables among past users in Kenya
This study examines factors associated with satisfaction with oral pills and injectables among past users in Kenya based on a baseline survey for the 2-year prospective longitudinal study Improving Measurement of Unintended Pregnancy and Unmet Need for Family Planning conducted in 2016. Married women aged 15–39 years were interviewed using a structured questionnaire that captured information on reproduction, contraceptive knowledge and beliefs an…
Method‐Specific Attributes that Influence Choice of Future Contraception Among Married Women in Nairobi's Informal Settlements
Despite an extensive evidence base on contraceptive method choice, it remains uncertain which factors are most influential in predisposing women toward certain methods and against others. This paper addresses this gap in knowledge by making use of rarely‐measured perceptions about specific methods, perceived social network experience of methods, and women's own past experiences using specific methods. We draw on baseline data from the project, “ …
Improving the Measurement of Fertility Regulation Practices
CONTEXT: According to Demographic and Health Survey (DHS) data, highly educated urban women in some West African countries simultaneously have low rates of both contraceptive use and fertility-suggesting that the DHS may not be capturing a complete picture of women's contraceptive practices. METHODS: Individual in-depth interviews and focus group discussions were conducted with a total of 48 women aged 18-49 in Accra, Ghana, who had at least a se…
The Challenges Posed by Demographic Change in sub-Saharan Africa
Unintended Childbearing and Child Growth in Northern Malawi
Objective The study aims to assess whether unintended children experience slower growth than intended children. Methods We analysed longitudinal data linked to the Karonga Health and Demographic Surveillance Site collected over three rounds between 2008 and 2011 on women's fertility intentions and anthropometric data of children. Using the prospective information on fertility intention we assessed whether unintended children are more likely to be…
An Assessment of Childbearing Preferences in Northern Malawi
Fertility preferences are an essential component of family planning program evaluation; however, doubts about their validity in sub‐Saharan Africa exist and little methodological assessment has been carried out. This study investigates prospective fertility intentions in terms of their temporal stability, intensity, degree of spousal agreement, and association with future childbearing in northern Malawi. A total of 5,222 married women participate…
Contraceptive Adoption, Discontinuation, and Switching among Postpartum Women in Nairobi's Urban Slums
Unmet need for contraception is highest within 12 months post‐delivery, according to research. Using longitudinal data from the Nairobi Urban Health and Demographic Surveillance System, we assess the dynamics of contraceptive use during the postpartum period among women in Nairobi's slums. Results show that by 6 months postpartum, 83 percent of women had resumed sexual activity and 51 percent had resumed menses, yet only 49 percent had adopted a …
Unmet Need for Family Planning in Ghana
In Ghana, despite a 38 percent decline in the total fertility rate from 1988 to 2008, unmet need for family planning among married women exposed to pregnancy risk declined only modestly in this period: from 50 percent to 42 percent. Examining data from the five DHS surveys conducted in Ghana during these years, we find that the relative contribution to unmet need of lack of access to contraceptive methods has diminished, whereas attitudinal resis…
The Challenges Posed by Demographic Change in sub-Saharan Africa
Fertility preferences and subsequent childbearing in Africa and Asia
Survey data on fertility preferences have played a central but controversial role in fertility research and advocacy for family planning. We summarize evidence from longitudinal studies in 28 Asian and African populations on the relationship between preferences and subsequent childbearing. While we found no consistent association between women's desire to delay childbearing and subsequent fertility, the baseline desire of women to stop childbeari…
Unmet Need for Family Planning in Ghana
In Ghana, despite a 38 percent decline in the total fertility rate from 1988 to 2008, unmet need for family planning among married women exposed to pregnancy risk declined only modestly in this period: from 50 percent to 42 percent. Examining data from the five DHS surveys conducted in Ghana during these years, we find that the relative contribution to unmet need of lack of access to contraceptive methods has diminished, whereas attitudinal resis…
An Assessment of Childbearing Preferences in Northern Malawi
Fertility preferences are an essential component of family planning program evaluation; however, doubts about their validity in sub‐Saharan Africa exist and little methodological assessment has been carried out. This study investigates prospective fertility intentions in terms of their temporal stability, intensity, degree of spousal agreement, and association with future childbearing in northern Malawi. A total of 5,222 married women participate…
Contraceptive Adoption, Discontinuation, and Switching among Postpartum Women in Nairobi's Urban Slums
Unmet need for contraception is highest within 12 months post‐delivery, according to research. Using longitudinal data from the Nairobi Urban Health and Demographic Surveillance System, we assess the dynamics of contraceptive use during the postpartum period among women in Nairobi's slums. Results show that by 6 months postpartum, 83 percent of women had resumed sexual activity and 51 percent had resumed menses, yet only 49 percent had adopted a …
Method‐Specific Attributes that Influence Choice of Future Contraception Among Married Women in Nairobi's Informal Settlements
Despite an extensive evidence base on contraceptive method choice, it remains uncertain which factors are most influential in predisposing women toward certain methods and against others. This paper addresses this gap in knowledge by making use of rarely‐measured perceptions about specific methods, perceived social network experience of methods, and women's own past experiences using specific methods. We draw on baseline data from the project, “ …
Misconceptions, Misinformation, and Misperceptions
Beliefs about contraception are commonly conceptualized as playing an important role in contraceptive decision‐making. Interventions designed to address beliefs typically include counseling to dispel any “myths” or “misconceptions.” These interventions currently show little evidence for impact in reducing beliefs. This commentary delves into the problems associated with using implicitly negative terminology to refer to contraceptive beliefs, whic…
Unmet Need for Family Planning in Ghana
In Ghana, despite a 38 percent decline in the total fertility rate from 1988 to 2008, unmet need for family planning among married women exposed to pregnancy risk declined only modestly in this period: from 50 percent to 42 percent. Examining data from the five DHS surveys conducted in Ghana during these years, we find that the relative contribution to unmet need of lack of access to contraceptive methods has diminished, whereas attitudinal resis…
An Assessment of Childbearing Preferences in Northern Malawi
Fertility preferences are an essential component of family planning program evaluation; however, doubts about their validity in sub‐Saharan Africa exist and little methodological assessment has been carried out. This study investigates prospective fertility intentions in terms of their temporal stability, intensity, degree of spousal agreement, and association with future childbearing in northern Malawi. A total of 5,222 married women participate…
Contraceptive Adoption, Discontinuation, and Switching among Postpartum Women in Nairobi's Urban Slums
Unmet need for contraception is highest within 12 months post‐delivery, according to research. Using longitudinal data from the Nairobi Urban Health and Demographic Surveillance System, we assess the dynamics of contraceptive use during the postpartum period among women in Nairobi's slums. Results show that by 6 months postpartum, 83 percent of women had resumed sexual activity and 51 percent had resumed menses, yet only 49 percent had adopted a …
Unintended Childbearing and Child Growth in Northern Malawi
Objective The study aims to assess whether unintended children experience slower growth than intended children. Methods We analysed longitudinal data linked to the Karonga Health and Demographic Surveillance Site collected over three rounds between 2008 and 2011 on women's fertility intentions and anthropometric data of children. Using the prospective information on fertility intention we assessed whether unintended children are more likely to be…
Improving the Measurement of Fertility Regulation Practices
CONTEXT: According to Demographic and Health Survey (DHS) data, highly educated urban women in some West African countries simultaneously have low rates of both contraceptive use and fertility-suggesting that the DHS may not be capturing a complete picture of women's contraceptive practices. METHODS: Individual in-depth interviews and focus group discussions were conducted with a total of 48 women aged 18-49 in Accra, Ghana, who had at least a se…
The Challenges Posed by Demographic Change in sub-Saharan Africa
Method‐Specific Attributes that Influence Choice of Future Contraception Among Married Women in Nairobi's Informal Settlements
Despite an extensive evidence base on contraceptive method choice, it remains uncertain which factors are most influential in predisposing women toward certain methods and against others. This paper addresses this gap in knowledge by making use of rarely‐measured perceptions about specific methods, perceived social network experience of methods, and women's own past experiences using specific methods. We draw on baseline data from the project, “ …
Factors influencing satisfaction with oral contraceptive pills and injectables among past users in Kenya
This study examines factors associated with satisfaction with oral pills and injectables among past users in Kenya based on a baseline survey for the 2-year prospective longitudinal study Improving Measurement of Unintended Pregnancy and Unmet Need for Family Planning conducted in 2016. Married women aged 15–39 years were interviewed using a structured questionnaire that captured information on reproduction, contraceptive knowledge and beliefs an…
Exploring the Demand‐Side Factors Associated with the Use of Implants in Kenya
We explore the demand‐side factors associated with the use of implants in Kenya given the notable rapid increase in uptake of the method in the country. Data are from a longitudinal study conducted among married or cohabiting women aged 15–39 years at the time of recruitment in one rural (2,424 women) and one urban (2,812 women) site. Analysis entails descriptive statistics and estimation of multivariate logistic regression models. The results sh…
Fertility preferences and subsequent childbearing in Africa and Asia
Survey data on fertility preferences have played a central but controversial role in fertility research and advocacy for family planning. We summarize evidence from longitudinal studies in 28 Asian and African populations on the relationship between preferences and subsequent childbearing. While we found no consistent association between women's desire to delay childbearing and subsequent fertility, the baseline desire of women to stop childbeari…
Misconceptions, Misinformation, and Misperceptions
Beliefs about contraception are commonly conceptualized as playing an important role in contraceptive decision‐making. Interventions designed to address beliefs typically include counseling to dispel any “myths” or “misconceptions.” These interventions currently show little evidence for impact in reducing beliefs. This commentary delves into the problems associated with using implicitly negative terminology to refer to contraceptive beliefs, whic…
Global Maternal and Child Health (10 works) · Medicine (10 works) · Demography (9 works) · Population (9 works) · Family planning (8 works) · Reproductive Health and Contraception (8 works) · Research methodology (8 works) · Environmental health (7 works) · Demography (6 works) · Economics (6 works)