Kota Ogasawara
Biographic Data
| ID | 1201633 |
|---|---|
| NAME | Kota Ogasawara |
| GIVEN NAMES | Kota |
| FAMILY NAME | Ogasawara |
| SIGNATURE | OGASAWARA K |
| AFFILIATIONS | Tokyo Institute of Technology |
| ORCID | 0000-0002-7744-2988 |
| VERIFIED | Yes |
| TOTAL WORKS | 23 |
| TOTAL CITATIONS | 23 |
| AUTHOR COUNT | 23 |
| EDITOR COUNT | 0 |
| FIRST PUBLICATION YEAR | 2015 |
| LATEST PUBLICATION YEAR | 2026 |
| H-INDEX | 2 |
The decline of child stunting in 122 countries
INTRODUCTION: Child stunting, a measure of malnutrition, is a major global health challenge affecting 148.1 million children in 2022. Global stunting rates have declined from 47.2% in 1985 to 22.3% in 2022; however, trends before the mid-1980s are unclear, including whether child stunting was previously prevalent in current high-income countries (HICs). We conducted a systematic review of child growth studies before 1990 to reconstruct historical…
Risk-coping behaviors in metropolis
Consumption Smoothing in the Working-Class Households of Interwar Japan
I analyze factory worker households in the early 1920s in Osaka to examine idiosyncratic income shocks and consumption. Using the household-level monthly panel dataset, I find that while households could not fully cope with idiosyncratic income shocks at that time, they mitigated fluctuations in indispensable consumption during economic hardship. In terms of risk-coping mechanisms, I find suggestive evidence that savings institutions helped mitig…
Did smallpox cause stillbirths? Maternal smallpox infection, vaccination, and stillbirths in Sweden, 1780-1839
While there is strong evidence that maternal smallpox infection can cause foetal loss, it is not clear whether smallpox infections were a demographically important cause of stillbirths historically. In this paper, we use parish-level data from the Swedish Tabellverket data set for 1780-1839 to test the effect of smallpox on stillbirths quantitatively, analysing periods before and after the introduction of vaccination in 1802. We find that smallpo…
Pandemic influenza and gender imbalance
Persistence of natural disasters on children's health
This study examines a catastrophic earthquake in 1923 to analyse the long-term effects of a natural disaster on children's health. The findings show that foetal exposure to Japan's Great Kantō Earthquake had stunting effects on girls in the devastated area. Disaster relief spending helped remediate stunting among boys by late primary school age, whereas it did not ameliorate girls' stunting, which suggests a prenatal selection mechanism and compe…
The long-run heterogeneous effects of a cholera pandemic on stature
Consequences of war
Health Shocks, Recovery, and the First Thousand Days
This article uses the health shock on Japanese civilians of the Second World War to understand the effects of health shocks at different developmental stages on children's long‐run growth pattern and to test whether recovery is possible after an early‐life health shock. We construct a prefecture‐level dataset of mean heights of boys and girls aged 6–19 from 1929 to 2015. Linking the heights recorded at different ages for the same birth cohort, we…
Nutrition, Crowding, and Disease Among Low‐income Households in Tokyo in 1930
This article employs a household survey of low‐income working‐class households conducted in Tokyo in 1930 to investigate nutritional attainment levels and the relationship between calorie intake and morbidity. We find that the daily calorie intake was 2,118 kcal per adult male equivalent, high enough to satisfy the energy requirements for moderate physical activity. Richer households purchased more expensive calories mainly by substituting meat a…
Particulate air pollution, birth outcomes, and infant mortality
This study investigates the impacts of the Automobile NO x Law of 1992 on ambient air pollutants and fetal and infant health outcomes in Japan. Using panel data taken from more than 1500 monitoring stations between 1987 and 1997, we find that NO x and SO 2 levels reduced by 5% and 11%, respectively in regulated areas following the 1992 regulation. In addition, using a municipal-level panel data set from Japan's Vital Statistics Survey and a diffe…
Heterogeneous treatment effects of safe water on infectious disease
Chain effects of clean water
Price shocks in regional markets
Japan's Great Kantō Earthquake of 1 September 1923 devastated the area around Tokyo and the country's main port of Yokohama. This article uses the earthquake as a case study to inform our understanding of the economics of disasters and the history of market integration. It seeks to test two main assumptions: first, that shifting demand and supply curves consequent on a disaster will have some impact on prices; and second, that any local changes i…
Public health improvements and mortality in interwar Tokyo
Early-life exposure to weather shocks and child height
In this study, we estimate the long-run effects of early-life exposure to weather shocks on the height of primary school children. To estimate the global impacts on almost the entire child population in an industrializing country, we utilize both a unique nationwide multi-dimensional longitudinal dataset of Japanese children aged 6-11 and official monthly statistics on meteorological conditions in the 1920s. We observe that the exposure to cold w…
Public health and multiple-phase mortality decline
The long-run effects of pandemic influenza on the development of children from elite backgrounds
Disease and child growth in industrialising Japan
This paper assesses how the disease environment, proxied by infant mortality rates, influenced children's growth in interwar Japan. We use data drawn from government records from 1929 to 1939 which report the mean heights of boys and girls in school at each age (6–18) for each of Japan's 47 prefectures. We focus on two key questions: (1) how important was the disease environment in infancy in shaping the growth pattern of children? and (2) were s…
Long-run effects of early childhood exposure to cholera on final height
Pandemic cholera is one of the most topical and urgent issues in many developing countries. However, although a growing body of research has shown the negative long-run effects of infectious disease exposure on human health, the long-run influences of early childhood exposure to cholera have thus far been understudied. To bridge this gap in the body of knowledge, we draw both on new data describing adult height from 1899 to 1910 from comprehensiv…
Health and education during industrialization
Persistence of pandemic influenza on the development of children
The impact of social workers on infant mortality in inter-war Tokyo
Disease and child growth in industrialising Japan
This paper assesses how the disease environment, proxied by infant mortality rates, influenced children's growth in interwar Japan. We use data drawn from government records from 1929 to 1939 which report the mean heights of boys and girls in school at each age (6–18) for each of Japan's 47 prefectures. We focus on two key questions: (1) how important was the disease environment in infancy in shaping the growth pattern of children? and (2) were s…
Persistence of pandemic influenza on the development of children
Price shocks in regional markets
Japan's Great Kantō Earthquake of 1 September 1923 devastated the area around Tokyo and the country's main port of Yokohama. This article uses the earthquake as a case study to inform our understanding of the economics of disasters and the history of market integration. It seeks to test two main assumptions: first, that shifting demand and supply curves consequent on a disaster will have some impact on prices; and second, that any local changes i…
Consumption Smoothing in the Working-Class Households of Interwar Japan
I analyze factory worker households in the early 1920s in Osaka to examine idiosyncratic income shocks and consumption. Using the household-level monthly panel dataset, I find that while households could not fully cope with idiosyncratic income shocks at that time, they mitigated fluctuations in indispensable consumption during economic hardship. In terms of risk-coping mechanisms, I find suggestive evidence that savings institutions helped mitig…
Did smallpox cause stillbirths? Maternal smallpox infection, vaccination, and stillbirths in Sweden, 1780-1839
While there is strong evidence that maternal smallpox infection can cause foetal loss, it is not clear whether smallpox infections were a demographically important cause of stillbirths historically. In this paper, we use parish-level data from the Swedish Tabellverket data set for 1780-1839 to test the effect of smallpox on stillbirths quantitatively, analysing periods before and after the introduction of vaccination in 1802. We find that smallpo…
Consequences of war
The impact of social workers on infant mortality in inter-war Tokyo
Long-run effects of early childhood exposure to cholera on final height
Pandemic cholera is one of the most topical and urgent issues in many developing countries. However, although a growing body of research has shown the negative long-run effects of infectious disease exposure on human health, the long-run influences of early childhood exposure to cholera have thus far been understudied. To bridge this gap in the body of knowledge, we draw both on new data describing adult height from 1899 to 1910 from comprehensiv…
Health and education during industrialization
Persistence of pandemic influenza on the development of children
Public health improvements and mortality in interwar Tokyo
Early-life exposure to weather shocks and child height
In this study, we estimate the long-run effects of early-life exposure to weather shocks on the height of primary school children. To estimate the global impacts on almost the entire child population in an industrializing country, we utilize both a unique nationwide multi-dimensional longitudinal dataset of Japanese children aged 6-11 and official monthly statistics on meteorological conditions in the 1920s. We observe that the exposure to cold w…
Public health and multiple-phase mortality decline
The long-run effects of pandemic influenza on the development of children from elite backgrounds
Disease and child growth in industrialising Japan
This paper assesses how the disease environment, proxied by infant mortality rates, influenced children's growth in interwar Japan. We use data drawn from government records from 1929 to 1939 which report the mean heights of boys and girls in school at each age (6–18) for each of Japan's 47 prefectures. We focus on two key questions: (1) how important was the disease environment in infancy in shaping the growth pattern of children? and (2) were s…
Heterogeneous treatment effects of safe water on infectious disease
Chain effects of clean water
Price shocks in regional markets
Japan's Great Kantō Earthquake of 1 September 1923 devastated the area around Tokyo and the country's main port of Yokohama. This article uses the earthquake as a case study to inform our understanding of the economics of disasters and the history of market integration. It seeks to test two main assumptions: first, that shifting demand and supply curves consequent on a disaster will have some impact on prices; and second, that any local changes i…
Nutrition, Crowding, and Disease Among Low‐income Households in Tokyo in 1930
This article employs a household survey of low‐income working‐class households conducted in Tokyo in 1930 to investigate nutritional attainment levels and the relationship between calorie intake and morbidity. We find that the daily calorie intake was 2,118 kcal per adult male equivalent, high enough to satisfy the energy requirements for moderate physical activity. Richer households purchased more expensive calories mainly by substituting meat a…
Particulate air pollution, birth outcomes, and infant mortality
This study investigates the impacts of the Automobile NO x Law of 1992 on ambient air pollutants and fetal and infant health outcomes in Japan. Using panel data taken from more than 1500 monitoring stations between 1987 and 1997, we find that NO x and SO 2 levels reduced by 5% and 11%, respectively in regulated areas following the 1992 regulation. In addition, using a municipal-level panel data set from Japan's Vital Statistics Survey and a diffe…
The long-run heterogeneous effects of a cholera pandemic on stature
Consequences of war
Health Shocks, Recovery, and the First Thousand Days
This article uses the health shock on Japanese civilians of the Second World War to understand the effects of health shocks at different developmental stages on children's long‐run growth pattern and to test whether recovery is possible after an early‐life health shock. We construct a prefecture‐level dataset of mean heights of boys and girls aged 6–19 from 1929 to 2015. Linking the heights recorded at different ages for the same birth cohort, we…
Pandemic influenza and gender imbalance
Persistence of natural disasters on children's health
This study examines a catastrophic earthquake in 1923 to analyse the long-term effects of a natural disaster on children's health. The findings show that foetal exposure to Japan's Great Kantō Earthquake had stunting effects on girls in the devastated area. Disaster relief spending helped remediate stunting among boys by late primary school age, whereas it did not ameliorate girls' stunting, which suggests a prenatal selection mechanism and compe…
Consumption Smoothing in the Working-Class Households of Interwar Japan
I analyze factory worker households in the early 1920s in Osaka to examine idiosyncratic income shocks and consumption. Using the household-level monthly panel dataset, I find that while households could not fully cope with idiosyncratic income shocks at that time, they mitigated fluctuations in indispensable consumption during economic hardship. In terms of risk-coping mechanisms, I find suggestive evidence that savings institutions helped mitig…
Did smallpox cause stillbirths? Maternal smallpox infection, vaccination, and stillbirths in Sweden, 1780-1839
While there is strong evidence that maternal smallpox infection can cause foetal loss, it is not clear whether smallpox infections were a demographically important cause of stillbirths historically. In this paper, we use parish-level data from the Swedish Tabellverket data set for 1780-1839 to test the effect of smallpox on stillbirths quantitatively, analysing periods before and after the introduction of vaccination in 1802. We find that smallpo…
The decline of child stunting in 122 countries
INTRODUCTION: Child stunting, a measure of malnutrition, is a major global health challenge affecting 148.1 million children in 2022. Global stunting rates have declined from 47.2% in 1985 to 22.3% in 2022; however, trends before the mid-1980s are unclear, including whether child stunting was previously prevalent in current high-income countries (HICs). We conducted a systematic review of child growth studies before 1990 to reconstruct historical…
Risk-coping behaviors in metropolis
Medicine (16 works) · Demography (11 works) · Child Nutrition and Water Access (10 works) · Economics (10 works) · Environmental health (10 works) · Demography (9 works) · Geography (8 works) · Sociology (8 works) · Birth, Development, and Health (6 works) · Disease (6 works)