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Table 4 Projections to 2040

From: The incidence of early onset colorectal cancer in Aotearoa New Zealand: 2000–2020

  

2020 actual

2030 predicted

2040 predicted

  

count

%

count

%

(CI)

count

%

(CI)

Total Ethnicity

        
 

Population

5.1 M

 

5.4 M

  

5.8 M

  
 

Cases

3142

 

3665

 

(3581, 3749)

4255

 

(4099, 4411)

 

Incidence

61.8

 

67.36

 

(65.81, 68.90)

73.07

 

(70.39, 75.75)

EOCRC

Population

3.4 M

65.90%

3.4 M

62.95%

 

3.5 M

60.31%

 
 

Cases

269

8.56%

361

9.85%

(331, 391)

524

12.31%

(458, 590)

 

Incidence

8.00

 

10.50

 

(9.7, 11.4)

14.90

 

(13.0, 16.8)

Older 80+

Population

0.2 M

3.65%

0.3 M

5.29%

 

0.4 M

7.14%

 
 

Cases

801

25.49%

1266

34.54%

(1210, 1322)

1830

43.01%

(1711, 1949)

 

Incidence

431.76

 

440.04

 

(420.7, 459.4)

439.96

 

(411.4, 468.5)

Māori ethnicity

        
 

Population

854.9 K

 

1,019.30 K

  

1,187.6 K

  
 

Cases

244

 

327

 

(308, 346)

438

 

(400, 476)

 

Incidence

28.54

 

32.04

 

(30.22, 33.94)

36.88

 

(33.68, 40.08)

EOCRC

Population

678.78 K

77.34%

788.40 K

77.35%

 

897.10 K

75.5%

 
 

Cases

43

17.6%

52

15.90%

[44, 60]

90

20.55%

(70, 109)

 

Incidence

6.33

 

6.64

 

(5.63, 7.64)

10

 

(7.84, 12.17)

Older 70+

Population

33.03 K

3.86%

60.30 K

5.92%

 

97.60 K

8.22%

 
 

Cases

69

28.3%

130

39.76%

(117, 142)

201

45.89%

(173, 229)

 

Incidence

208.9

 

215.19

 

(194.45, 235.94)

205.61

 

(176.76, 234.45)

  1. Predicted case numbers and incidence with 95% confidence intervals (in parentheses) based on Poisson regression on Median population growth projections for 2030 and 2040. Actual data shown for 2020