BackgroundThe number of people of advanced age (85 years and older) is increasing and health systems may be challenged by increasing health-related needs. Recent overseas evidence suggests relatively high levels of wellbeing in this group, however little is known about people of advanced age, particularly the indigenous Māori, in Aotearoa, New Zealand. This paper outlines the methods of the study Life and Living in Advanced Age: A Cohort Study in New Zealand. The study aimed to establish predictors of successful advanced ageing and understand the relative importance of health, frailty, cultural, social & economic factors to successful ageing for Māori and non-Māori in New Zealand.Methods/designA total population cohort study of those of advanced age. Two cohorts of equal size, Māori aged 80–90 and non-Māori aged 85, oversampling to enable sufficient power, were enrolled. A defined geographic region, living in the Bay of Plenty and Lakes District Health Board areas of New Zealand, defined the sampling frame. Rūnanga (Māori tribal organisations) and Primary Health Organisations were subcontracted to recruit on behalf of the University. Measures - a comprehensive interview schedule was piloted and administered by a trained interviewer using standardised techniques. Socio-demographic and personal history included tribal affiliation for Māori and participation in cultural practices; physical and psychological health status used standardised validated research tools; health behaviours included smoking, alcohol use and nutrition risk; and environmental data included local amenities, type of housing and neighbourhood. Social network structures and social support exchanges are recorded. Measures of physical function; gait speed, leg strength and balance, were completed. Everyday interests and activities, views on ageing and financial interests complete the interview. A physical assessment by a trained nurse included electrocardiograph, blood pressure, hearing and vision, anthropometric measures, respiratory function testing and blood samples.DiscussionA longitudinal study of people of advanced age is underway in New Zealand. The health status of a population based sample of older people will be established and predictors of successful ageing determined.

Objectives: The purpose of this study was to investigate the knowledge and health beliefs regarding osteoporosis risk factors of New Zealand women aged 20-49 years. Design: A descriptive, web-based survey. Subjects: An opportunistic sample of 622 women aged between 20 and 49 years living in Auckland, New Zealand was recruited by email. Results: There was a moderate level of knowledge about osteoporosis risk factors among the women surveyed, with a mean total score for all subjects of 16.4 (standard deviation (SD) 4.0) out of a possible 26 correct responses. Mean scores for osteoporosis knowledge were statistically different by age group, with women aged 40 -49 years scoring higher than those aged 30 -39 years and 20-29 years (17.3 (SD 4.0), 16.4 (SD 4.1) and 15.8 (SD 3.9), respectively, P , 0.001). Overall, about a third of the women perceived that they were likely to develop osteoporosis and 22% believed the disease to be potentially crippling. Most women were aware of the benefits of exercise and optimal calcium nutrition in preventing osteoporosis. Few women perceived barriers to exercise participation and eating calcium-rich foods. Older women (40-49 years) were more motivated to take care of their health than younger women (P , 0.001). A large percentage of subjects (77%) thought that calcium-rich foods contained too much cholesterol. Conclusions: Despite reporting higher than average educational attainment and health consciousness, these women demonstrated average levels of knowledge about osteoporosis risk factors. They had low feelings of susceptibility towards development of osteoporosis, but most considered it to be a serious disease.

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Half the participants were at high nutrition risk. They tended to be widowed or live alone and had lower levels of haemoglobin and serum zinc. Those at lower nutrition risk had greater muscle mass and strength, lower body fat, consumed alcohol more frequently and engaged in more physical activity. Strategies which encourage older people to eat meals and be physically active with others may assist to improve their health.

Objective: To investigate the associations between nutrition risk status, body composition and physical performance among community‐dwelling older New Zealanders. Methods: This cross‐sectional study enrolled 257 community‐dwelling older adults (median age 79 years). Assessments included the Mini Nutritional Assessment‐Short Form (MNA®‐SF) for nutrition risk; the Eating Assessment Tool‐10 for dysphagia risk; bioimpedance analysis for body composition (free fat mass (FFM) and percentage body fat) and gait speed for physical performance. A multiple logistics regression analysis was conducted, to determine factors associated with lower odds [OR (95% CI)] for nutrition risk. Results: Every yearly increase in age was associated with higher odds 1.09 (1.01–1.17) for nutrition risk. Additionally, nutrition risk was less likely to occur among participants of age <85 years 0.30 (0.11–0.79), with no dysphagia 0.29 (0.09–0.97) and those with a healthy gait speed 0.29 (0.09–0.97). Lower odds for nutrition risk were also found with increasing values of FFM index 0.51 (0.34–0.77), and percentage body fat 0.81 (0.72–0.90). Gait speed was positively correlated with FFM index (r=0.19 p<0.022), percentage body fat (r=0.23, p=0.006) and BMI (r=0.29, p<0.001). Conclusion: Among these participants, associations between nutrition risk, body composition and physical performance were found. Implications for public health: Routine screening of nutrition risk and/or physical performance among vulnerable older adults is key towards identifying those in need of assessment and dietary intervention. Alongside strategies to encourage physical activity, this may help to slow losses of FFM and protect physical performance.