Tags Manulife’s annual Asia Care Survey 2023 Vietnamese people optimistic about personal finances, anxieties remain about the cost of managing health Monday, Jun 12, 2023 A total of 7,224 people, aged 25 to 60 years old, were surveyed in late December 2022 and early January 2023. In Viet Nam, 1,015 people were surveyed. Each respondent either owns insurance or intends to buy insurance.