caregiver burden human 9 Article 8 female 7 male 7 adult 6 caregiver 5 Humans 4 controlled study 4 coping behavior 4 social support 4 Caregivers 3 Female 3 Male 3 aged 3 anxiety 3 child 3 cross-sectional study 3 disease severity 3 major clinical study 3 psychology 3 questionnaire 3 Adaptation, Psychological 2 Adult 2 Malaysia 2 Middle Aged 2 Perceived Stress Scale 2 Surveys and Questionnaires 2 adolescent 2 autism 2