othersocial andeconomic factors thatoperate atthefamily aswellasatthe community level. Intheareaofmortality emphasis willbegiventothestudyof trends, changing causes andconsequences ofmortality differences, bothbetween and within countries, andtheirrelevance forpolicy. Special attention willalsobe giventothestudyoftherelationship between mortality levels andthestatusof women, whoareoftenthehealth providers within thehousehold. 18.19 Research willbeundertaken intheareaofinternal population distribution andmigration. Special efforts willbemadetomonitor politically volatile components ofmigration, including migration forpermanent resettlement, temporary migration oflabour, undocumented orillegal migration andrefugee movements. SUBPROGRAMME 2.WORLD POPULATION PROJECTIONS (a)Objectives 18.20 Thelegislative authority forthepresent subprogramme derives fromthe WorldPopulation PlanofAction of1974,paragraph 78(e);General Assembly resolution 3344(XXIX); andEconomic andSocial Council resolutions 1763(LIV), 1946(LVIII), 2053(LXII), 1979/33, 1981/29, 1985/3, 1987/71 and1989/93. 18.21 Theobjectives ofthesubprogramme aretoprepare biennially, forall countries oftheworld,pastandcurrent estimates andprojections oftheir population size,byageandsex,ratesofpopulation growth, andothermajor demographic indicators, andtoprepare biennially estimates andprojections of urbanandruralpopulations andofurbanagglomerations forallcountries and regions. (b)Course ofaction oftheSecretariat 18.22 During themedium-term planfortheperiod 1992-1997, rounds ofestimates andprojections willbeundertaken onabiennial basiscovering atotalperiodof 75yearsormore,starting in1950.Inundertaking thoseestimates and projections, acomprehensive andsystematic assessment ofthemajordemographic variables foreveryquinquennial yearandperiodwillbemade,takingintoaccount -6-• Digitized by Dag Hammarskjöld Librarytheresults oftheworkinsubprogramme 1.Thecombined effects onpopulation growth anddistribution ofthelevels andtrendsofthemajordemographic variables willalsobeassessed andtheconsistency amongthemwillbechecked. Basedon plausible future courses ofchanges indemographic trends, fourvariants of projections willbeprepared, namely, medium, high,lowandconstant-fertility variants. Thoseestimates andprojections areusedthroughout theUnited Nations system, byGovernments, bynon-governmental organizations andotherprivate institutions. Toincrease theusefulness ofthoseestimates andprojections tothe users,special efforts willbemadeduringtheperiodtoexpand andimprove the dissemination ofresults inaformsuitable foruseonmicrocomputers. SUBPROGRAMME 3.POPULATION POLICY ANDSOCIO-ECONOMIC DEVELOPMENT (a)Objectives 18.23 Thelegislative authority forthesubprogramme derives fromtheWorld Population PlanofActionof1974,paragraph 78;General Assembly resolutions 3344(XXIX)and3345(XXIX); andEconomic andSocialCouncil resolutions 1943(LVIII), 1979/32, annex,partE,paragraphs 1,3,9and13, 1979/33, paragraphs 2(d)(e),1981/29, 1985/3, 1987/71 and1989/93. 18.24 Thecomplex effects andinterdependencies between population trends and policies andmajorareasofsocio-economic development, inparticular the environment, havegivenrisetoincreasing demands bycountries andregions for relevant research andanalysis. Thereisgeneral agreement foramorecomplete integration ofpopulation withdevelopment processes andpolicyformulation, but lessagreement withrespect toplanning forresource useandenvironmental concerns. 18.25 Although thereisglobalconsensus onmostpopulation issuesfollowing the WorldPopulation Conference of1974,newconcerns, emphases andapproaches have arisenregarding therelationships between population growth andsocio-economic development. Otherissuesofconcern include thecentrality ofthestatus androle ofwomeninpopulation anddevelopment processes, thesignificance ofurbanization
**Analysis**
The text appears to be focused on population studies, demography, and their implications on economic development, health, and social policies. It discusses the preparation of population projections, mortality trends, and migration patterns, as well as the relationship between population growth and socio-economic development.

**Category**
Health, Economic development