This publication supercedes the Cancer: New registrations and deaths 2005 publication, released in September 2008.
ISBN: 978-0-478-31286-7 (print)
ISBN: 978-0-478-31289-8 (online)
This annual statistical publication collates and analyses data on primary malignant tumour cases diagnosed in New Zealand, as reported to the New Zealand Cancer Registry.
The NZ Cancer Registry has operated since 1948 and is a population-based tumour register of all primary malignant disease. (Basal and squamous cancers arising in the skin are not required to be reported, except for those of the genitalia.)
The major sources of new registrations are copies of laboratory reports, post-discharge reports from publicly funded hospitals, death certificates and autopsy reports, and discharge reports from private hospitals.
The data collected includes information on the site, stage and pathology of the cancer, as well as demographic information (e.g. ethnicity, age, sex, and domicile). The data is collected under the Cancer Registry Act 1993 and the Cancer Registry Regulations 1994.
The publication highlights the following facts:
- In 2005 there were 18,610 new registrations of cancer in New Zealand. The number of registrations decreased by 3.2 percent from 2004 but increased by 17.3 percent from 1995.
- The age-standardised rate for new cancer registrations was 340.3 per 100,000 population.
- There were 9647 male and 8963 female new registrations in 2005. The male age-standardised registration rate (376.3 per 100,000 males) exceeded the female rate (312.7 per 100,000 females). In both cases, the rates have lowered since 2004, and are significantly less than in 1995 (431.9 and 325.6 for males and females respectively).
- In 2005 there were 7971 recorded deaths from cancer in New Zealand. Deaths from cancer have decreased by 2.1 percent from 2004 and increased by 7.4 percent from 1995.
- Cancer remained the leading cause of death in New Zealand, accounting for 29.4 percent of deaths, slightly more than non-congenital heart diseases.
- There were 4184 males and 3787 females recorded as having died from cancer in 2005.
- For both sexes age-standardised mortality rates have decreased significantly since 1995. For males the rate for 2005 was 156.6 per 100,000 males, compared to 196.9 in 1995. For females the rate for 2005 was 116.9 per 100,000 females, compared to 143.8 in 1995.
Selected cancer sites
- The most commonly registered cancer in 2005 was cancer of the colorectum and anus (2716 new cases), followed by cancer of the breast (2479), and cancer of the prostate (2471).
- The leading cause of death from cancer in 2005 was cancer of the trachea, bronchus and lung (1451 deaths), followed by cancer of the colorectum and anus (1222 deaths).
- Among males, prostate cancer was the most commonly registered cancer (25.6 percent of male registrations), with an age-standardised rate of 95.0 registrations per 100,000 males.
- Cancer of the trachea, bronchus and lung was the leading cause of cancer deaths among males in 2005 (864 deaths, nearly 21 percent of male cancer deaths), with an age-standardised rates of 32.3 registrations per 100,000 males.
- Among females, breast cancer was the most commonly registered cancer (27.4 percent of all female registrations), with an age-standardised rate of 92.0 cases per 100,000 females.
- Breast cancer was also the leading cause of cancer deaths among females (648 deaths, 17.1 percent of female cancer deaths), with an age-standardised mortality rate of 21.7 per 100,000 females.
- The age-specific rates for cancer registrations were considerably higher in the older age groups in 2005 (18.0 per 100,000 people aged under 25 compared with 371.3 for people aged from 25 to 64 years, and 2097.8 for people aged 65 years and over).
- The most common types of cancer vary with age – leukaemia among children and youth; malignant melanoma of the skin among 25-44 year old males; breast cancer among 25-44 year old females; prostate cancer among males 45 years and older; and cancer of the breast among females 45 years and older.
- For Māori, in 2005, there were 1377 cancer registrations (598 males and 779 females) and 760 deaths (369 males and 391 females) from cancer.
- For Pacific peoples, there were 575 registrations (267 males and 308 females) and 244 deaths (115 males and 129 females).
- For Non non-Māori, non-Pacific peoples there were 16,658 registrations (8782 males and 7876 females).
- The most commonly registered cancer among Māori males was cancer of the trachea, bronchus and lung .The most commonly registered cancer for Pacific and non-Māori, non-Pacific males was prostate cancer. However, when comparing age-standardised registration rates, prostate cancer is the most common for all groups, with a rate of 74.9 per 100,000 population of Māori males, 98.5 for Pacific males and 96.9 for non-Māori, non-Pacific males.
- For females, the most commonly registered cancer for each ethnic group was breast cancer. Breast cancer is also the most common cancer by age-standardised rate per 100,000 females, with Māori females showing a rate of 102.2, Pacific females a rate of 96.3 and non-Māori, non-Pacific females a rate of 90.8.
- For males the leading cause of cancer deaths within each group was cancer of the trachea bronchus and lung. Māori males showed an age-standardised mortality rate of 73.8 per 100,000 population, Pacific males a rate of 57.3 and non-Māori, non-Pacific males a rate of 28.5.
- For Māori and Pacific females, cancer of the trachea, bronchus and lung was the leading cause of cancer deaths. The most common cause of cancer deaths for non-Māori, non-Pacific females was cancer of the colorectum and anus. When comparing age-standardised mortality rates, the leading cause of cancer deaths for Māori and Pacific women was cancer of the trachea, bronchus and lung (with rates of 70.5 and 24.0 respectively). The leading cause of cancer deaths (when comparing age-standardised rates) for Non-Māori, non-Pacific females was cancer of the breast with an age-standardised mortality rate of 21.2 per 100,000 female population.