GUINZ; most children ok but some are not

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Goodfellow Gems

GUINZ; most children ok but some are not

Growing Up in New Zealand (GUINZ) is a New Zealand cohort study of 6,853 children recruited during pregnancy, represents the current New Zealand birth population, and followed for eight years so far.1,2

  • 80% of children are doing well according to their mothers, and 20% not doing so well.
  • 12% of pregnant women suffer postnatal depression symptoms, and 8% in their child’s first year of life. 20% get professional help.
  • 5% of male partners also had postnatal depression symptoms, and commonly this increased the chances their partners also did.
  • Bullying is reported by mothers of 33% of pre-schoolers, and by the children themselves at 8 years. 35% report being bullied regularly (14% weekly).
  • 4% of children witness their parents’ physical violence, and 10% witness their parents’ psychological violence.
  • 5% of the children have moved house at least once before they are eight years old.


  1. Susan Morton: Growing Up in NZ 2021  View on Youtube
  2. Now we are eight. GUINZ (2021) View pdf

Gems are chosen by the Goodfellow director Dr. Bruce Arroll to be either practice changing or practice maintaining. The information is educational and not clinical advice.

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