Social BehaviorSocial ClassSocial SupportSocial MobilityOccupationsSocial EnvironmentSocial IsolationWalesSocioeconomic FactorsEnglandScotlandSocial PerceptionGreat BritainSocial AdjustmentSocial ConditionsEducational StatusSocial DominanceSex FactorsSocial MediaSocial WorkIllegitimacyHierarchy, SocialRisk FactorsAge FactorsMarriageSocial SciencesHealth StatusSocial JusticeEmploymentFathersCross-Sectional StudiesUnemploymentSmokingMortalityQuestionnairesSocial ChangeSocial DistanceResidence CharacteristicsFinlandInfant, NewbornBirth WeightCohort StudiesHousingHistocompatibility Antigens Class ISocial ValuesSocial ProblemsHealth SurveysHistocompatibility Antigens Class IISocial Behavior DisordersIntelligenceLife StyleLongitudinal StudiesProspective StudiesPrevalenceSocial Security