Data reveals stress is still a factor in greater Christchurch.

Just over 2500 residents took part in the Canterbury District Health Board survey - 72% of them say they've experienced negative stress in the last 12 months.

Minister supporting Greater Christchurch Regeneration, Nicky Wagner said significantly fewer are indicating distress and anxiety associated with aftershocks

However, survey fieldwork was completed prior to the Kaikoura earthquake.