1. (a) FAO commodity statistics
Table 1 Correlation coefficient (r) from Pearson correlation analysis between cumulative salted fish consumption per capita (per kg) and age-standardized incidence and mortality rates in Hong Kong, The cumulative salted fish consumption up to the specified time point was estimated by aggregating annual salted fish consumption per capita estimates in all years prior to that year up to (a) Cumulative salted fish consumption per capita was estimated from FAO commodity statistics on fish, dried, salted or smoked. (b) Cumulative salted fish consumption per capita was estimated from Hong Kong trade statistics on dried fish, whether or not salted but not smoked.
(a) FAO commodity statistics
Year of cumulative salted fish consumption per capita
Age-standardized incidence rate
Age-standardized mortality rates
Male
Female
0.897
0.909
0.874
0.904 5
0.919
0.883
0.953
0.916 10
0.927
0.886
0.952
0.925 15
0.962
0.929
0.940
0.914 20
0.937
0.913
All P<0.01
(b) Hong Kong trade statistics
Year of cumulative salted fish consumption per capita
Age-standardized incidence rate
Age-standardized mortality rates
Male
Female
0.789
0.797
0.723
0.719 5
0.841
0.839
0.835
0.762 10
0.860
0.837
0.880
0.796 15
0.936
0.924
0.933
0.851 20
0.874
0.863
0.929
0.799
All P<0.01

2. Table 2 Correlation coefficient (r) from Pearson correlation analysis between cumulative cigarette consumption per capita (per stick) and age-standardized incidence and mortality rates in Hong Kong.
Year of cumulative cigarette
consumption per capita
Age-standardized incidence rate
Age-standardized mortality rates
Male
Female
0.749
0.773
0.721
0.783 5
0.746
0.669
0.747
0.651 10
0.712
0.657
0.772
0.766 15
0.820
0.759
0.860
0.900 20
0.953
0.916
0.888
0.923
All P<0.01

3. Table 3 Correlation coefficient (r) from Pearson correlation analysis between cumulative fresh vegetable consumption per capita (per kg) and age-standardized incidence and mortality rates in Hong Kong.
Year of cumulative
fresh vegetable
consumption per capita
Age-standardized incidence rate
Age-standardized mortality rates
Male
Female
-0.937
-0.939
-0.981
-0.961 5
-0.978
-0.974
-0.972
-0.954 10
-0.985
-0.966
-0.914 15
-0.976
-0.958
-0.927
-0.856 20
-0.935
-0.906
-0.918
-0.829
All P<0.01

4. Table 4 Beta (β) regression coefficient from multivariate regression analysis of NPC age-standardized incidence and mortality rates on cumulative salted fish (per kg), cigarette (per stick) and fresh vegetable consumption (per kg). Cumulative salted fish consumption per capita was estimated from FAO commodity statistics on fish, dried, salted or smoked.
Cumulative Window
(Years)
Independent Variable
Age-standardized incidence rate
Age-standardized mortality rates
Male
Female
Salted fish
3.015
1.217
-1.473
-0.264
Smoking
0.002
0.001*
Fresh vegetables
-0.298*
-0.135*
-0.212*
-0.072* 5
-0.874
-0.469
0.520
0.313
0.002*
0.0005
0.0003
-0.083*
-0.042*
-0.024*
-0.009* 10
-0.146
-0.228
0.283
0.234
0.0001
-0.039*
-0.021*
-0.011*
-0.002 15
1.556
0.757
0.193
0.513
-0.001
-0.004
0.006 20
-1.842
-0.365
1.152
0.165
0.001
0.0002
-0.036
-0.010
0.013
0.004
* Significant at 0.01 level

5. Appendix
Table 1a Population in Hong Kong aged 5 and over by usual language, 1991, 1996, 2001 and 2006
Usual Language
1991
1996
2001
2006
Number
% of total
Cantonese
88.7
89.2
90.8
Putonghua
57 577
1.1
65 892
55 410
0.9
60 859
Other Chinese Dialects
7.1
5.8
5.5
4.4
English
2.2
3.1
3.2
2.8
Others
49 232
1.0
73 879
1.3
79 197
1.2
72 217
Total
100.0

6. Table 1b Population by nationality in Hong Kong 1991, 1996, 2001 and 2006
Number
% of total
Chinese
Place of domicile - Hong Kong
94.0
90.4
93.3
92.9
Place of domicile - other than Hong Kong
48 029
0.9
64 717
1.0
76 898
1.1
86 062
1.3
Filipino
64 658
1.2
1.9
2.1
1.7
Indonesian
N.A.
22 057
0.4
54 629
0.8
1.6
British
68 502
2.8
25 418
24 990
Indian
14 329
0.3
20 955
16 481
0.2
17 782
Pakistani, Bangladeshi and Sri-Lankan
12 161
12 181
Thai
11 787
15 993
14 791
16 151
Nepalese
12 379
15 845
Japanese
10 850
19 010
14 715
13 887
American
18 383
28 946
0.5
14 379
13 608
Canadian
15 135
32 515
11 862
11 976
Others
79 063
1.4
93 771
1.5
49 150
0.7
51 728
Total
100.0

7. China (other than Hong Kong)
Table 1c Population by place of birth in Hong Kong
Calendar Year
Hong Kong
China (other than Hong Kong)
Elsewhere
Total
Number
% of total
1961
47.7
50.5
57 530
1.8
100.0
1971
56.4
41.6
79 880
2.0
1976
58.9
38.6
2.5
1981
57.2
39.6
3.2
1986
59.4
37.0
3.6
1991
59.8
35.6
4.6
1996
60.3
33.7
6.0
2001
59.7
6.6
2006
33.5
6.2