scholarly journals Fertility Differentials and Educational Attainment in Portugal: A Non-Linear Relationship

2009 ◽  
Vol 36 (3-4) ◽  
pp. 347 ◽  
Author(s):  
Isabel Tiago De Oliveira
Keyword(s):  
Educational Attainment ◽  
Linear Relationship ◽  
Female Employment ◽  
Main Hypothesis ◽  
Number Of Children ◽  
General Decline ◽  
Fertility Differentials ◽  
Non Linear ◽  
Employment Rates ◽  
Work Effect

This analysis of the Portuguese case shows a non-linear relationship between the number of children and education in recent years. Using the data from ten years before this hypothesis was confirmed, and we can see that the general decline in Portuguese fertility within the last decade was due to the fertility decrease of the less educated people, although partly attenuated by the fertility increase of the upper social groups. The reasons for a non-linear relationship are discussed within the context of female employment rates and salary differentials by educational attainment. The main hypothesis is that differences in fertility are related to an ‘education-work’ effect amongst those in the less educated groups and to an ‘education-income’ effect amongst the more educated.

scholarly journals How Many Children? A Comparison of the Influence of Individual and Country-Level Predictors on Female Childbearing Behavior in 25 OECD Countries

2020 ◽  
Vol 16 (2) ◽  
pp. 115
Author(s):  
MANDY BOEHNKE ◽  
MICHAEL FELDHAUS
Keyword(s):  
Educational Attainment ◽  
Oecd Countries ◽  
Female Employment ◽  
World Value Survey ◽  
Individual Level ◽  
Number Of Children ◽  
Country Level ◽  
Employment Rates ◽  
The Individual ◽  
The Impact

Utilizing a multi-level analytic approach (HLM), the present study analyzes reasons for variations in the number of children among 4069 25- to 34-year old women in 25 OECD countries, surveyed in the World Value Survey (WVS). Educational attainment, household income, age, and pro-child attitudes were included as individual-level predictors, whereas on the country-level, individualism and masculinity (as conceptualized by Hofstede), the Human Development Index (HDI), marriages rates, female employment rates, and early childcareenrolment rates were used as predictors. On the individual level, pro-child attitudes and age covaried positively with number of children, educational attainment did so negatively, whereas household incomewas unrelated. Beyond the overall finding that more highly educated women have fewer children, analyses revealed that the impact of education on fertility varies significantly between countries. Of the macro-level indicators, HDI had the strongest impact in that women in countries higher on HDI have fewer children. Country-specific individualism predicted individual number of children positively after partialing for HDI. This result was, however, not sustained, once female employment rates were included in the prediction model: Against age-old folklore convictions, 25- to 34-year-old woman in countries with a high female employment rate have more not fewer children.

Type/Token Ratios: what do they really tell us?

1987 ◽  
Vol 14 (2) ◽  
pp. 201-209 ◽  
Author(s):  
Brian Richards
Keyword(s):  
Language Development ◽  
Sample Size ◽  
Linear Relationship ◽  
Child Language ◽  
Lexical Diversity ◽  
Diversity Measure ◽  
Closed Class ◽  
Language Research ◽  
Non Linear

ABSTRACTType/Token Ratios have been extensively used in child language research as an index of lexical diversity. This paper shows that the measure has frequently failed to discriminate between children at widely different stages of language development, and that the ratio may in fact fall as children get older. It is suggested here that such effects are caused by a negative, though non-linear, relationship between sample size (i.e. number of tokens) and Type/Token Ratio. Effects of open and closed class items are considered and an alternative Verbal Diversity measure is examined. Standardization of the number of tokens before computing Type/Token Ratios is recommended.

scholarly journals Association between serum uric acid and triglycerides in Chinese children and adolescents with short stature

2021 ◽  
Vol 20 (1) ◽  
Author(s):  
Yuntian Chu ◽  
Qianqian Zhao ◽  
Mei Zhang ◽  
Bo Ban ◽  
Hongbing Tao
Keyword(s):  
Uric Acid ◽  
Standard Deviation ◽  
Children And Adolescents ◽  
Linear Relationship ◽  
Short Stature ◽  
Serum Uric Acid ◽  
Standard Deviation Score ◽  
Short Children ◽  
Non Linear ◽  
Males And Females

Abstract Background Elevated triglyceride (TG) levels are a biomarker for cardiovascular disease (CVD) risk. The correlation between serum uric acid (SUA) and TG concentrations in adults or obese children is well established. However, studies on SUA and TG in children with short stature are limited. Aim To determine the relationship between SUA and TG levels in short children and adolescents. Method This was a cross-sectional evaluation of a cohort of 1095 patients with short stature (720 males and 375 females). The related clinical characteristics, including anthropometric and biochemical parameters, were determined. Results Smooth curve fitting, adjusted for potential confounders was performed, which indicated the existence of a non-linear relationship between these measures. Piecewise multivariate linear analysis revealed a significant positive relationship between SUA and TG at SUA concentrations over 7 mg/dL (β = 0.13, 95% CI: 0.05–0.22, P = 0.002) but no significant correlation at lower SUA levels (β = 0.01, 95% CI: 0.01–0.04, P = 0.799). Furthermore, a stratified analysis was performed to appraise changes in this relationship for different sexes and standard deviation levels of body mass index (BMI). The non-linear relationship remained consistent in males and females with BMI standard deviation scores (BMI SDS) ≥ 0, with inflection points of 6.71 mg/dL and 3.93 mg/dL, respectively. Within these two groups, SUA and TG levels showed a positive association when SUA levels were higher than the inflection point (β = 0.21, 95% CI: 0.11–0.31, P < 0.001 for males and β = 0.1, 95% CI: 0.03–0.17, P = 0.005 for females). However, a specific relationship was not observed at lower SUA levels. No significant relationships were found between SUA and TG levels in males and females with BMI SDS < 0. Conclusion The present study identified the non-linear association of SUA and TG levels with short children and adolescents. This relationship was based on BMI status. This finding suggests that health status should be considered for short stature children with high SUA levels, especially in children with a high BMI standard deviation score.

scholarly journals A Non-linear Relationship Between Selective Attention and Associated ERP Markers Across the Lifespan

2019 ◽  
Vol 10 ◽  
Author(s):  
Eva-Maria Reuter ◽  
Solveig Vieluf ◽  
Flora Koutsandreou ◽  
Lena Hübner ◽  
Henning Budde ◽  
...  
Keyword(s):  
Selective Attention ◽  
Linear Relationship ◽  
Non Linear
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