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  • UCD CENTRE FOR ECONOMIC RESEARCH

    WORKING PAPER SERIES

    2010

    Height and well-being amongst older Europeans

    Kevin Denny, University College Dublin

    WP10/36

    October 2010

    UCD SCHOOL OF ECONOMICS UNIVERSITY COLLEGE DUBLIN

    BELFIELD DUBLIN 4

  • HeightandwellbeingamongstolderEuropeans

    KevinDenny

    SchoolofEconomics

    UniversityCollegeDublinIreland

    October20th2010

    Thispaperusesacrosscountry representative sampleofEuropeansover the

    ageof50 to analysewhether individualsheight is associatedwithhigheror

    lower levelsofwellbeing.Twooutcomesareused:ameasureofdepression

    symptomsreportedbyindividualsandacategoricalmeasureoflifesatisfaction.

    It isshownthatthere isaconcaverelationshipbetweenheightandsymptoms

    of depression. These results are sensitive to the inclusion of several sets of

    controls reflecting demographics, human capital and health status. While

    parsimoniousmodelssuggestthatheight isprotectiveagainstdepression,the

    additionofcontrols,particularlyrelatedtohealth,suggeststhereverseeffect:

    tallpeoplearepredictedtohaveslightlymoresymptomsofdepression.Height

    hasnosignificantassociationwith lifesatisfaction inmodelswithcontrols for

    healthandhumancapital.

    Keywords:height,depression,wellbeing,lifesatisfaction,health

    [email protected] Address: School of Economics, University College Dublin, Dublin 4, Ireland (visitingEconomicsDepartment,UniversityofKentucky2010).Theauthor isalsoaffiliatedtotheUCDGeary InstituteandtheInstituteforFiscalStudies,London.

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    1.Introduction

    The relationship between height and labourmarket outcomes such as earnings has been

    extensivelystudiedbyeconomistsparticularlysince thepublicationofPersicoetal (2004).

    Understandingthecauseofthepremiumhasproved lessstraightforward.CaseandPaxson

    (2008)attribute it to theassociationbetweenheightandcognitiveability.The idea is that

    low height is a marker for underdevelopment generally reflecting, perhaps, early

    deprivation.Cognitiveunderdevelopment,theargumentgoes, isoneaspectofthisunder

    development.Therehasbeenmuch lessanalysisofwhetherheight isassociatedwithwell

    beinggenerally.Thetwoissuesareclearlyrelatedsinceonewouldexpectaheightearnings

    premium to translate intohigher levelsofwellbeing. Indeedcognitiveabilitycouldhavea

    direct positive independent of any effect via earnings. Lundborg et al (2009) by contrast

    presentevidencethatthepremiumisprimarilyduetotheassociationbetweenheightanda

    personsphysicalcapacity.Itisworthremembering,asBattyetal(2009)pointout,thatwhile

    early lifeconditions(particularly inextremis)maywell influenceheight,there isalsoavery

    stronghereditarycomponent.

    Amongst health researchers, a number of studies have analysedwhether height predicts

    mentalhealth.ForexampleStack&Wasserman(1996)foundthatshorterpeopleweremore

    likely to attempt suicidewhile Bjerkeset et al (2008)who find no associationwith either

    depression or suicidality. However, some of these studies in this area are primarily

    concerned with those who are abnormally short (particularly children) arising from

    conditionssuchasgrowthhormonedeficiencyandare lessconcernedwithvariation inthe

    normalrange,seeLaw(1987)forareview.

    Averyuseful recentoverviewof thepossiblepathwaysbetweenheightandbothphysical

    andmentalhealthisprovidedbyBattyetal(2009).Theynotethattherearebothcostsand

    benefits to height sowhile chronic heart disease ismore common amongst short people

    certaincancersareactuallylesscommon.Thissuggeststhatoneshouldbealerttopossible

    nonlinearitieswhen looking at the effect onwellbeing since, conceivably, the effect of

    height, to the extent that it is a health effect,may be nonmonotonic. Nonmonotonic

    associationswith regard to height have been found in some studies. For exampleNettle

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    (2002)looksatthereproductivesuccessofacohortofBritishmalesandfindsthatwhiletall

    menaremore likely tohavea long termpartnerand less likely tobe childless than short

    men, extremely tallmen have an excess of health problems and aremore likely to be

    childless.AnanalogouspatternisfoundbyHbler(2009)whofindsanonmonotonicheight

    earnings premium for males with short and very tall men earnings less than those in

    between.Heineck(2008)findsasimilarnonmonotonicearningsheightrelationship.

    Therehavebeenseveralrecentcontributionstotheeconomics literatureonthesubjectof

    height andwellbeing. The paper byDeaton&Arora (2009) uses a largeUS dataset, the

    GallupHealthways Wellbeing index. The outcome studied is the Cantril selfanchoring

    striving scale (Cantril (1965)) inwhich individuals identifywhere they are on a notional

    ladderwiththetop(11th)rungcorrespondingtothebestpossiblelifeandthebottomrung

    correspondingtotheworstpossible life.Theyfindthatheight is indeedassociatedwitha

    higher place in this index and,moreover that it is almost entirely due to the association

    betweenheightandbothearningsandeducation.ThestudybyRees,SabiaandArgys(2009)

    foundinasampleofUSadolescentstheexistenceofasmallheightpremium,intheformof

    fewersymptomsofdepression.Thiswaspresentonlyforolderfemales(ages1719)butall

    males (ages1219).They findnoeffectson selfesteem.Thispaperhas themeritofusing

    longitudinal datawhich allows it control for fixed effects though this turns out not to be

    critical.

    Thispaperaddstothesefindingsanddiffersfromtheminseveralkeyrespects.Itusesalarge

    representative sample from12Europeancountrieswhich isdrawn from thepopulationof

    over50yearolds.Itconsidersasoutcomesbothameasureoflifesatisfactionandameasure

    ofdepressionsymptoms.Italsoallowsfortherelationshipwithheighttobenonlinear.

    2.Data

    The dataset used is SHARE: the Survey of Ageing,Health and Retirement in Europe. This

    collectsdatafromnationallyrepresentativesamplesofthenoninstitutionalpopulationaged

    50 years and older. The primary sampling unit is a household and all individuals in the

    householdwhoare inthetargetagecategoryare interviewed.Thispaperusedrelease2of

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    thedatasetwhich includes12countrieswhichwascollectedbetween2004and2006.See

    BoerschSupan&Juerges(2005)fordetailsofthemethodologybehindthedataset.

    EuroD is a 12 item scale developed by the EURODEP Consortium (Prince et al 1999,

    Copeland1999).Itisprimarilybasedonthreeparentinstruments:theGeriatricMentalState

    AGECAT(Copeland,Dewey,&GriffithJones,1986),SHORTCARE(Gurland,Golden,Teresi,&

    Challop,1984),andCESD (Radloff,1977).The latter instrument isused in theRees,Sabia

    andArgys(2009)paperdiscussedabove.TheEuroDscalewascreatedtoprovideasimple

    measure of the extent of depressive symptoms that could be used for comparing across

    European countries. The questions refer to the presence of these symptoms in the last

    month.Valuesofthescaleequaltothreeorhigheraretakenasadepressioncasethat is

    indicatingthatsuchanindividualisatriskofdepression.Hencethescalecannotbeusedto

    indicatewhetheran individual isclinicallydepressedornotbut forconvenience, itwillbe

    sometimes referred tohereas depression. Forotheranalysesof thedepressiondata in

    SHAREseeCastroCostaetal(2007)andDenny(2009).Thequestiononsatisfactionisbased

    onresponsestothequestionHowsatisfiedareyouwithyourlifeingeneral?andiscoded

    from0(lowest)to3(highest).

    Themarginaldistributions for these twovariables for thesampleused in thedataanalysis

    areshowninFigures1and2respectively.Thejointdistributionofthetwooutcomesisgiven

    inTable1b (where theEuroD scalehasbeen simplified forconvenience).There isaclear

    associationbetween the two (thenullof independence is comfortably rejected,p=.0000).

    Nonetheless there are individualswith relativelyhighdepression scoreswho reportbeing

    very satisfiedwith their life. Since the two refer todifferentperiods this isbynomeans

    inconsistentbut it serves to remindone thatone shouldnotassume that findings forone

    outcomewillberepeatedfortheother.Theindependentvariableofinterestisthepersons

    selfreportedheightmeasured incentimetres. Kerneldensityestimatesforthedistribution

    ofheight formalesand femalesareshown inFigure3.There isevidenceofbimodality for

    bothsexeswhichseemstoreflectdigitalpreferencewith largenumbersreportingvalues

    at160,165,168and170cmrelativetoadjacentvalues.

    Allmodelscontainasetofcountrydummyvariables(notshowninthetables)andadummy

    variable forbeing female.Controls are classified into three groups,demographics,human

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    capitalandhealth.Demographiccontrolsconsistofage(inyears)andasetofdummiesfor

    marital status.Human capital controls consistsof income (in/10000),yearsofeducation

    andameasureofverbalability.Sinceaconsiderableproportionofthesampleisreportedto

    havezeroincome,adummyforzeroincomeisincluded.Thehealthcontrolsconsistsofthe

    numberofchronicdiseaseseverexperienced,ameasureofgripstrength,andtwomeasures

    of theirphysical infirmity.One iswhether they report limitationsof theiractivitiesby the

    IADLcriterion (instrumentalactivitiesofdaily living).Respondentswereaskedaboutseven

    activitiesandavariable codedone if they report limitationswithoneormoreof these is

    used.Thesecondmeasure,labelledGALI,isabinaryvariableindicatingwhethertheyhave

    feltlimitedintheirdailyactivitiesbasedonthequestionForthepastsixmonthsatleast,to

    whatextenthaveyoubeen limitedbecauseofahealthproblem inactivitiespeopleusually

    do?

    Missingvaluesare treatedbycasewisedeletion.Descripti