The Socioeconomic Gradient of Obesity in Ireland

Using the nationally representative Slan dataset we calculate concentration indices for the incidence of obesity for men and women. We finder higher concentration indices for women than for men, but we also find that concentration indices fell between 2002 and 2007. However this appears to be owing to an increased incidence of obesity amongst better off people rather than decreased obesity amongst the less well-off. A decomposition of the concentration indices suggest that the greatest contribution to the gradient comes from the combination of lower rates of obesity amongst those with 3rd level education and their higher income.Obesity, Body Mass Index, Concentration Index, decomposition.

Relative or Absolute Poverty Lines - A New Approach

When measuring poverty over time analysts must choose the value of the income elasticity of the poverty line, which essentially determines whether an absolute or relative poverty line is being used. The choice of this parameter is ultimately a value judgement but this paper suggests an approach which has some empirical basis. Borrowing from the life-style and deprivation approach to poverty various dimensions of poverty and deprivation are identified and the income elasticity of these items is used as the income elasticity of the poverty line. Data from the 1987 and 1994 Irish Household Budget Surveys suggest an upper bound of 0.7 for this parameter. Poverty measures using a number of values of the income elasticity of the poverty line are presented and test statistics are presented to determine whether observed differences in poverty measures are statistically significant.Poverty, Deprivation

A Profile of Obesity in Ireland, 2002-2007

Using the nationally representative Slan dataset we take a number of approaches to profile the change in obesity in Ireland over the 2002-2007 period. There is no evidence of either first or second order stochastic dominance between the two years. There is evidence that obesity and overweight are relatively more concentrated amongst males, the old and those with lower educational achievement. While obesity rose slightly over the period this was due to a rise in the average level of body mass index rather than a change in the shape of the distribution. Finally a semi-parametric decomposition of the change in the distribution over time indicates that the change in obesity arose not because of changes in population characteristics but rather the in the impact of these characteristics on body mass index.Obesity, Body Mass Index, Decomposition

Sample Selection Versus Two-Part Models Revisited - The Case of Female Smoking and Drinking

There is a well-established debate between Heckman sample selection and two-part models in health econometrics, particularly when no obvious exclusion restrictions are available. Most of this debate has focussed on the application of these models to health care expenditure. This paper revisits the debate in the context of female smoking and drinking, and evaluates the two approaches on three grounds - theoretical, practical and statistical. The two-part model is generally favoured but it is stressed that this comparison should be carried out on a case-by-case basis.Selection, Two-part, Smoking, Drinking

Health Interventions and Risky Behaviour

This paper reviews the extent to which policy interventions can affect risky behaviours such as smoking, drinking and diet. The justification for such intervention is typically a market failure, broadly defined. The types of market failure typically encountered are discussed. First and second best interventions are examined and there is a review of the efficacy of such interventions with respect to Ireland.Risky behaviour, market failure

Health and Income Poverty in Ireland, 2003-2006

Recent advances in the measurement of bi-dimensional poverty are applied to a measure of poverty which incorporates income and health poverty. The correlation between income and poverty is examined using the Receiver Operating Characteristics curve. Following from this unidimensional and bi-dimensional poverty indices are calculated for Ireland for the years 2003-2006. Individual and bi-dimensional indices generally show a decline over the period with the biggest decline between 2003 and 2004. The results are generally not sensitive to the degree of poverty aversion or the substitutability between the different dimensions of poverty.receiver operating characteristic, multidimensional poverty

A Profile of Obesity in Ireland, 2002-2007

Using the nationally representative Slan dataset we take a number of approaches to profile the change in obesity in Ireland over the 2002-2007 period. There is no evidence of either first or second order stochastic dominance between the two years. There is evidence that obesity and overweight are relatively more concentrated amongst males, the old and those with lower educational achievement. While obesity rose slightly over the period this was due to a rise in the average level of body mass index rather than a change in the shape of the distribution. Finally a semi-parametric decomposition of the change in the distribution over time indicates that the change in obesity arose not because of changes in population characteristics but rather the in the impact of these characteristics on body mass index.Obesity, Body Mass Index, Decomposition

Ordinal and Cardinal Measures of Health Inequality - An Empirical Comparison

When measuring health inequality using ordinal data, analysts typically must choose between indices specifically based upon ordinal data and more standard indices using ordinal data which has been transformed into cardinal data. This paper compares inequality rankings across a number of different approaches and finds considerable sensitivity to the choice between ordinal and cardinal based indices. There is relatively little sensitivity to the ethical choices made by the analyst in terms of the weight attached to different parts of the distribution.Inequality, cardinal, ordinal

Was Ireland better off in 1994 than in 1987?

This paper examines the change in welfare in Ireland over the 1987- 1994 period by investigating whether Lorenz and Generalised Lorenz dominance can be observed for household expenditure data. It also calculates bootstrapped standard error measures for Lorenz and Generalised Lorenz curves and finds that the Generalised Lorenz curve for 1994 lies everywhere above that for 1987 thus indicating dominance. It also investigates whether welfare rose using more specific social welfare measures based on average expenditure and the Gini coefficient and finds a statistically significant rise in social welfare.Lorenz Dominance, Generalised Lorenz Dominance, Social Welfare

A Comparison of Poverty and Welfare Measures

The relatively widespread use of poverty measures is analysed and their properties compared with other definitions of welfare. Using a synthetic data set but one which shares some properties of the Irish income distribution of 1987, a number of changes in incomes are simulated and their impact upon a variety of poverty and welfare measures is analysed. It is argued that abbreviated welfare measures may summarise better what it is that concerns economists about poverty than do conventional poverty measures.Poverty, Inequality, Abbreviated Welfare