Hospitals - DHBs for that matter - hate negative publicity around serious incidents or deaths, and who can blame them.
But, publicly at least, they back the annual release of the Serious and Sentinel Events Report. I suspect that, privately, they don't like taking an annual hit of negative publicity.
DHBs must report serious incidents to the Ministry of Health, which are released as part of the annual Serious and Sentinel Events Report.
The purpose of publicising the incidents is to attempt to improve patient care and prevent similar incidents happening.
If we look at the Northland District Health Board incidents publicised since the inaugural Serious and Sentinel Events Report in 2007/2008, it would seem that the intent behind the public reporting is working.