Essays in Applied Labour Economics

This dissertation comprises three chapters in applied labour economics. The first chapter studies the extent to which occupation flexibility explains the evolution of the UK graduate gender wage gap. It documents that the share of graduate women working in flexible occupations increased both over the life cycle and over time, whereas men increased work in inflexible occupations at older ages. The wage penalty associated with flexibility increased over time and over the life cycle. The graduate gender wage gap is small at labour market entry and widens over the life cycle. Quantile decomposition analysis shows that sorting into flexible occupations explained between 15% to two-thirds of the life cycle increase in the gender wage gap. The reduction in the gap would have been up to 150% larger across cohorts if sorting into flexible occupations had not increased over time. The second chapter estimates an equilibrium model to investigate how changes in labour demand and supply explained patterns in flexibility and the gender wage gap. Higher relative demand for male labour at older ages, and in inflexible occupations, largely explained the life cycle increases in the gender wage gap, whereas women’s higher preferences for working in flexible occupations drove the increases in sorting into flexible occupations over time. The third chapter uses a difference-in-differences strategy to evaluate the effect of declines in child malaria mortality on fertility and female labour force participation in Tanzania. Exposure to the decline in child mortality led to increases in extensive margin fertility for women aged 15–25 in areas where malaria was not endemic, in line with reductions in malaria risk during first pregnancy, especially among adults with low levels of acquired immunity. Labour force participation fell for mothers aged 26–40, particularly those with children under five in the household

Growth Recovery and Faltering through Early Adolescence in Low- and Middle-Income Countries: Determinants and Implications for Cognitive Development

Child chronic undernutrition, as measured by stunting, is prevalent in low- and middle-income countries and is among the major threats to child development. While stunting and its implications for cognitive development have been considered irreversible beyond early childhood, there is a lack of consensus in the literature on this, as there is some evidence of recovery from stunting and that this recovery may be associated with improvements in cognition. Less is known, however, about the drivers of growth recovery and the aspects of recovery linked to cognitive development. In this paper, we investigate the factors associated with growth recovery and faltering through age 12 years and the implications of the incidence, timing, and persistence of post-infancy recovery from stunting for cognitive development using longitudinal data from Ethiopia, India, Peru, and Vietnam. We find that the factors most systematically associated with accelerated growth both before and after early childhood and across countries include mother’s height, household living standards and shocks, community wages, food prices, and garbage collection. Our results suggest that post-infancy recovery from stunting is more likely to be systematically associated with higher achievement scores across countries when it is persistent and that associations between growth trajectories and cognitive achievement in middle childhood do not persist through early adolescence across countries. Overall, our findings indicate that growth after early childhood is responsive to changes in the household and community environments and that growth promotion after early childhood may yield improvements in child cognitive development

COVID-19: Third dose booster vaccine effectiveness against breakthrough coronavirus infection, hospitalisations and death in patients with cancer: A population-based study

Purpose: People living with cancer and haematological malignancies are at increased risk of hospitalisation and death following infection with acute respiratory syndrome coronavirus 2 (SARS-CoV-2). Coronavirus third dose vaccine boosters are proposed to boost waning immune responses in immunocompromised individuals and increase coronavirus protection; however, their effectiveness has not yet been systematically evaluated. Methods: This study is a population-scale real-world evaluation of the United Kingdom’s third dose vaccine booster programme for cancer patients from 8th December 2020 to 7th December 2021. The cancer cohort comprises individuals from Public Health England’s national cancer dataset, excluding individuals less than 18 years. A test-negative case-control design was used to assess third dose booster vaccine effectiveness. Multivariable logistic regression models were fitted to compare risk in the cancer cohort relative to the general population. Results: The cancer cohort comprised of 2,258,553 tests from 361,098 individuals. Third dose boosters were evaluated by reference to 87,039,743 polymerase chain reaction (PCR) coronavirus tests. Vaccine effectiveness against breakthrough infections, symptomatic infections, coronavirus hospitalisation and death in cancer patients were 59.1%, 62.8%, 80.5% and 94.5% respectively. Lower vaccine effectiveness was associated with a cancer diagnosis within 12 months, lymphoma, recent systemic anti-cancer therapy (SACT) or radiotherapy. Lymphoma patients had low levels of protection from symptomatic disease. In spite of third dose boosters, following multivariable adjustment, individuals with cancer remain at increased risk of coronavirus hospitalisation and death compared to the population control (OR 3.38, 3.01 respectively. p<0.001 for both). Conclusions: Third dose boosters are effective for most individuals with cancer, increasing protection from coronavirus. However, their effectiveness is heterogenous, and lower than the general population. Many patients with cancer will remain at increased risk of coronavirus infections, even after 3 doses. In the case of patients with lymphoma, there is a particularly strong disparity of vaccine effectiveness against breakthrough infection and severe disease. Breakthrough infections will disrupt cancer care and treatment with potentially adverse consequences on survival outcomes. The data support the role of vaccine boosters in preventing severe disease, and further pharmacological intervention to prevent transmission and aid viral clearance to limit disruption of cancer care as the delivery of care continues to evolve during the coronavirus pandemic

The impact of parental aspirations on private school enrolment: evidence from Andhra Pradesh, India

This paper presents an analysis of the role of parental aspirations in determining private school choice in Andhra Pradesh, using quantitative and qualitative data from the Young Lives cohort study over two rounds. Aspirations are measured using a range of indicators of what educational attainment level and future occupational status parents desire for their children. We find robustly, across all measures of aspirations and different empirical specifications, that parental aspirations have a significant positive impact on the probability that the child is enrolled in a private school. This finding is further supported by qualitative evidence that also suggests that higher parental aspirations for the future situation of their child will lead to higher investment in education because parents perceive education as key to future success. Thus, our findings suggest that parental aspirations are among the demand factors that may explain the recent dramatic increase in private school enrolment in Andhra Pradesh among the poorest groups. This is mainly because parents believe that private schools can provide a better future for their children, which motivates them to make the necessary investment.</p

Youth transitions - Skills, work and family formation: Preliminary findings from the Round 5 Survey in Vietnam: Youth transitions: Skills, work, and family formation: Preliminary findings from the 2016 Young Lives Survey (Round 5): Viet Nam

This fact sheet presents findings from the fifth round of the Young Lives survey of children in Viet Nam in 2016. Young Lives has followed two cohorts of children since 2002, a Younger Cohort born in 2001-02 and an Older Cohort born in 1994-95. This fact sheet focuses on issues related to the educational attainment, work and work-related skills, and marital status of the Older Cohort (aged 22 in 2016). By 2016, the majority of 22-year-olds in our sample had moved out of school and into work. In addition, about one in five young men and two in five young women had married or started cohabiting by the time of the Round 5 survey. In terms of education, work-related skills, and usage of digital devices and internet, ethnic minority youth and those whose caregivers had little or no schooling have less favourable outcomes than their peers. Moreover, our data show that while a large majority of 22-year-olds in our sample were employed outside agriculture, ethnic minority young people are most likely to be self-employed in the agricultural sector. Key Findings: Over 60% of 22-year-olds in our sample completed upper secondary education, and more than half of those went on to post-secondary institutions, universities and colleges. About half of the 22-year-olds have used a computer, laptop or tablet weekly in the past year. Over 80% accessed the internet weekly too. In 2016, over 90% of the 22-year-olds who were not at school, were working. Of this group, eight out of 10 were employed outside agriculture, (seven as employed workers and one self-employed). Among the ethnic minority youth, however, two-thirds were employed in agriculture and were mostly self-employed. By the age of 22, slightly over 40% of young women were married or cohabitating with partners, while the corresponding figure for young men is less than 20%. In 2016, nearly 75% of 22-year-olds were exclusively working, as few as 6% were exclusively studying, slightly under 10% were combining both activities, and 10% were in neither work or education

Disparities in children's vocabulary and height in relation to household wealth and parental schooling: A longitudinal study in four low- and middle-income countries.

Children from low socio-economic status (SES) households often demonstrate worse growth and developmental outcomes than wealthier children, in part because poor children face a broader range of risk factors. It is difficult to characterize the trajectories of SES disparities in low- and middle-income countries because longitudinal data are infrequently available. We analyze measures of children's linear growth (height) at ages 1, 5, 8 and 12y and receptive language (Peabody Picture Vocabulary Test) at ages 5, 8 and 12y in Ethiopia, India, Peru and Vietnam in relation to household SES, measured by parental schooling or household assets. We calculate children's percentile ranks within the distributions of height-for-age z-scores and of age- and language-standardized receptive vocabulary scores. We find that children in the top quartile of household SES are taller and have better language performance than children in the bottom quartile; differences in vocabulary scores between children with high and low SES are larger than differences in the height measure. For height, disparities in SES are present by age 1y and persist as children age. For vocabulary, SES disparities also emerge early in life, but patterns are not consistent across age; for example, SES disparities are constant over time in India, widen between 5 and 12y in Ethiopia, and narrow in this age range in Vietnam and Peru. Household characteristics (such as mother's height, age, and ethnicity), and community fixed effects explain most of the disparities in height and around half of the disparities in vocabulary. We also find evidence that SES disparities in height and language development may not be fixed over time, suggesting opportunities for policy and programs to address these gaps early in life

Disparities in children's vocabulary and height in relation to household wealth and parental schooling: A longitudinal study in four low- and middle-income countries.

Children from low socio-economic status (SES) households often demonstrate worse growth and developmental outcomes than wealthier children, in part because poor children face a broader range of risk factors. It is difficult to characterize the trajectories of SES disparities in low- and middle-income countries because longitudinal data are infrequently available. We analyze measures of children's linear growth (height) at ages 1, 5, 8 and 12y and receptive language (Peabody Picture Vocabulary Test) at ages 5, 8 and 12y in Ethiopia, India, Peru and Vietnam in relation to household SES, measured by parental schooling or household assets. We calculate children's percentile ranks within the distributions of height-for-age z-scores and of age- and language-standardized receptive vocabulary scores. We find that children in the top quartile of household SES are taller and have better language performance than children in the bottom quartile; differences in vocabulary scores between children with high and low SES are larger than differences in the height measure. For height, disparities in SES are present by age 1y and persist as children age. For vocabulary, SES disparities also emerge early in life, but patterns are not consistent across age; for example, SES disparities are constant over time in India, widen between 5 and 12y in Ethiopia, and narrow in this age range in Vietnam and Peru. Household characteristics (such as mother's height, age, and ethnicity), and community fixed effects explain most of the disparities in height and around half of the disparities in vocabulary. We also find evidence that SES disparities in height and language development may not be fixed over time, suggesting opportunities for policy and programs to address these gaps early in life

HEADS, TAILS, AND SPINES: BOOK ART FROM CCA STUDENTS exhibition documentation

Book art can range from a simple zine to a unique altered book, a folded piece of handmade paper to a handcrafted and letterpress printed edition, and everything in between and beyond. Visual imagery may be generated through photography, illustration, graphic design, textile, and printmaking techniques and may feature poems, stories, and research. Students from all majors come together to learn how to make books in two classes offered by the Printmaking Program at CCA: Bookworks; and Papermaking and the Book. The exhibition highlighted selected book art created in classes taught by Alisa Golden and Rhiannon Alpers during the spring semester of 2017

Vaccine effectiveness against COVID-19 breakthrough infections in patients with cancer (UKCCEP): a population-based test-negative case-control study.

BACKGROUND People with cancer are at increased risk of hospitalisation and death following infection with SARS-CoV-2. Therefore, we aimed to conduct one of the first evaluations of vaccine effectiveness against breakthrough SARS-CoV-2 infections in patients with cancer at a population level. METHODS In this population-based test-negative case-control study of the UK Coronavirus Cancer Evaluation Project (UKCCEP), we extracted data from the UKCCEP registry on all SARS-CoV-2 PCR test results (from the Second Generation Surveillance System), vaccination records (from the National Immunisation Management Service), patient demographics, and cancer records from England, UK, from Dec 8, 2020, to Oct 15, 2021. Adults (aged ≥18 years) with cancer in the UKCCEP registry were identified via Public Health England's Rapid Cancer Registration Dataset between Jan 1, 2018, and April 30, 2021, and comprised the cancer cohort. We constructed a control population cohort from adults with PCR tests in the UKCCEP registry who were not contained within the Rapid Cancer Registration Dataset. The coprimary endpoints were overall vaccine effectiveness against breakthrough infections after the second dose (positive PCR COVID-19 test) and vaccine effectiveness against breakthrough infections at 3-6 months after the second dose in the cancer cohort and control population. FINDINGS The cancer cohort comprised 377 194 individuals, of whom 42 882 had breakthrough SARS-CoV-2 infections. The control population consisted of 28 010 955 individuals, of whom 5 748 708 had SARS-CoV-2 breakthrough infections. Overall vaccine effectiveness was 69·8% (95% CI 69·8-69·9) in the control population and 65·5% (65·1-65·9) in the cancer cohort. Vaccine effectiveness at 3-6 months was lower in the cancer cohort (47·0%, 46·3-47·6) than in the control population (61·4%, 61·4-61·5). INTERPRETATION COVID-19 vaccination is effective for individuals with cancer, conferring varying levels of protection against breakthrough infections. However, vaccine effectiveness is lower in patients with cancer than in the general population. COVID-19 vaccination for patients with cancer should be used in conjunction with non-pharmacological strategies and community-based antiviral treatment programmes to reduce the risk that COVID-19 poses to patients with cancer. FUNDING University of Oxford, University of Southampton, University of Birmingham, Department of Health and Social Care, and Blood Cancer UK

A population-scale temporal case–control evaluation of COVID-19 disease phenotype and related outcome rates in patients with cancer in England (UKCCP)

Abstract Patients with cancer are at increased risk of hospitalisation and mortality following severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection. However, the SARS-CoV-2 phenotype evolution in patients with cancer since 2020 has not previously been described. We therefore evaluated SARS-CoV-2 on a UK populationscale from 01/11/2020-31/08/2022, assessing case-outcome rates of hospital assessment(s), intensive care admission and mortality. We observed that the SARS-CoV-2 disease phenotype has become less severe in patients with cancer and the non-cancer population. Case-hospitalisation rates for patients with cancer dropped from 30.58% in early 2021 to 7.45% in 2022 while case-mortality rates decreased from 20.53% to 3.25%. However, the risk of hospitalisation and mortality remains 2.10x and 2.54x higher in patients with cancer, respectively. Overall, the SARS-CoV-2 disease phenotype is less severe in 2022 compared to 2020 but patients with cancer remain at higher risk than the non-cancer population. Patients with cancer must therefore be empowered to live more normal lives, to see loved ones and families, while also being safeguarded with expanded measures to reduce the risk of transmission