I agree there is likely insufficient suitable data held for this task.
On general stats there presumably must be some data aggregation as we do hear occasionally that x% of the adult population is afflicted with [insert condition].
The New Zealand Health Survey 2020/21 found that:
- around 1 in 3 adults (aged 15 years and over) were classified as obese*(34.3%), up from 31.2% in 2019/20
- there was a significant increase from 2019/20 to 2020/21 for women (31.9% to 35.9%), but not for men
- the prevalence of obesity among adults differed by ethnicity, with 71.3% of Pacific, 50.8% of Māori, 31.9% of European/Other and 18.5% of Asian adults obese
- adults living in the most socioeconomically deprived areas were 1.6 times as likely to be obese as adults living in the least deprived areas**
https://www.health.govt.nz/nz-health...ity-statistics