Table 6 Regions of Mozambique: hepatocellular carcinoma CIRs, ASIRs and significance, 1989–96

From: Changes in the geographical and temporal patterns of cancer incidence among black gold miners working in South Africa, 1964–1996

District

Popln. a

CIR

Obs.

Exp. b

ASIR c

Signif. d

Bilene

27 350

3.7

1

3.3

30.6

 

Vilanculos

23 766

4.2

1

2.8

35.3

 

Xai-Xai

63 523

4.7

3

7.6

39.6

−−

Chibuto

34 359

8.7

3

4.1

73.2

 

Guijá

29 550

10.2

3

3.5

85.1

 

Maputo

64 547

9.3

6

9.8

91.9

 

Matola

17 533

17.1

3

   

Panda

30 140

19.9

6

3.6

171.2

 

Homoine

Inharrime

Manhica

22 547

22.2

5

2.7

185.8

 

Magude

Inhambane

36 017

33.3

12

4.3

279.2

++

Murrumbene

Massinga

Zavala

34 181

41.0

14

4.1

343.2

++

Muchopes

District not known

  

8

   

Mozambique

383 513

16.9

65

45.8 e

141.9 f

++

  1. aPopulation in man-years of labour employment.
  2. bExpected number calculated at Mozambique truncated age-standardised incidence ratio (ASIR) 141.9.
  3. cLocal ASIR for the district.
  4. dObserved greater than expected value at ++P<0.01 by Poisson distribution. Observed less than expected value at −−P<0.05.
  5. eExpected total calculated on all miners' rate.
  6. fASIR calculated on all miners as 100.
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