Study type:
Epidemiological study
(observational study)
Trends in incidence of primary brain cancer in New Zealand, 1995 to 2010
epidem.
By:
Kim SJH, Ioannides SJ, Elwood JM
Published in: Aust N Z J Public Health 2015; 39 (2): 148-152
Aim of study (acc. to author)
Time trends in the incidence rates of brain malignancies were investigated in New Zealand from 1995 to 2010.
Endpoint/type of risk estimation
Type of risk estimation:
(standardized incidence rate (SIR))
Exposure
Population
-
Group:
-
Age:
≥ 10 years
-
Characteristics:
population of New Zealand
-
Observation period:
1995 - 2010
-
Study location:
New Zealand
-
Data source:
Cancer Registry
-
Exclusion criteria:
children under the age of 10
Study size
| Type |
Value |
| Total |
4,360,000 |
Results (acc. to author)
There were 4,212 eligible cases (2,433 in males, 1,779 in females) at all ages diagnosed in the 15-year period 1995-2010 in the population of New Zealand. The age-standardized incidence rates are of 6.74 per 100,000 in males and 4.49 per 100,000 in females.
No consistent increase in incidence rates of all primary brain cancer, or especially of glioma were found in New Zealand from 1995 to 2010. At ages 10-69, the incidence of all malignant brain tumors declined significantly. Incidence of glioma increased at ages over 70, this is likely to be due to improvements in diagnosis. As with any such trend studies, a small effect, or one with a latent period of more than 10 to 15 years, cannot be excluded.
Study funded by
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