The asian approach to elder care is different from the approach in most western countries, where the elderly are considered independent and are expected to tend to their own care. it is not uncommon for family members to intervene, but

Awaiver of the requirement for documentation of informed consent may be granted when: the investigator has no convenient place to store signed consent forms separate from the research datathe only record linking the subject and the research is the consent document and the principal risk is a breach of confidentiality.potential subjects might find some of the research questions embarrassing, personal, or intrusivethe subjects are literate in their own language; however, they do not read, write, or speak english