aged 2 emotional support human 2 male 2 Activities of daily living 1 Age Factors 1 Aged 1 China 1 Cognition 1 Educational Status 1 Elder care 1 Female 1 Humans 1 Instrumental activities of daily living 1 Intergenerational support 1 Interpersonal Relations 1 Male 1 Memory Disorders 1 Mental health 1 Middle Aged 1 Parent-Child Relations 1 Physical health 1 Sex Factors 1 Social Support 1 Surveys and Questionnaires 1 United States 1 age 1 article 1 care behavior 1 child 1