Eighteen months ago, Kevin Gibson was driving school bus runs and enjoying a fit and healthy life just ahead of his 80th birthday.

Now, the 81-year-old Gisborne man has "more bad days than good", as he waits for surgery after being diagnosed with an enlarged prostate.

The long wait for surgery was highlighted by his son, Tony Gibson, who wrote to National's health spokesman Michael Woodhouse this month.

Kevin Gibson's case comes to light as National is pressing the Government over health care targets.

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Opposition leader Simon Bridges' calculations have indicated that in the nine months to the end of