Introduction
Methods
State | 1901 | 1911 | 1921 | 1933 | 1947 | 1954 | 1961 | 1971 | 1981 |
---|---|---|---|---|---|---|---|---|---|
NSW | |||||||||
Australia | 1,079,154 | 1,377,219 | 1,772,614 | 2,245,555 | 2,681,514 | 2,960,124 | 3,290,372 | 3,643,535 | 3,992,904 |
UKI | 220,401 | 205,369 | 260,426 | 284,601 | 222,096 | 247,102 | 269,077 | 342,797 | 331,741 |
Other | 31,162 | 31,987 | 37,301 | 41,777 | 45,274 | 114,987 | 163,631 | 184,701 | 222,264 |
QLD | |||||||||
Australia | 323,436 | 446,695 | 592,163 | 787,718 | 992,178 | 1,160,595 | 1,341,069 | 1,549,662 | 1,906,136 |
UKI | 126,159 | 120,428 | 128,234 | 120,482 | 82,654 | 92,951 | 93,329 | 114,989 | 140,816 |
Other | 22,495 | 21,508 | 19,955 | 18,265 | 13,054 | 29,879 | 39,537 | 50,404 | 91,608 |
SA | |||||||||
Australia | 288,815 | 350,261 | 436,991 | 524,609 | 602,521 | 686,489 | 783,228 | 884,928 | 980,826 |
UKI | 56,395 | 44,744 | 46,326 | 45,361 | 32,718 | 50,477 | 78,786 | 146,391 | 151,832 |
Other | 8,630 | 8,563 | 7,221 | 5,737 | 4,272 | 32,511 | 52,248 | 53,736 | 55,090 |
WA | |||||||||
Australia | 126,952 | 209,050 | 248,866 | 328,946 | 411,035 | 489,699 | 572,182 | 729,379 | 904,992 |
UKI | 41,551 | 50,836 | 66,739 | 89,066 | 69,608 | 83,814 | 83,365 | 153,512 | 183,680 |
Other | 7,506 | 9,381 | 6,661 | 6,832 | 5,527 | 28,589 | 30,723 | 42,171 | 56,062 |
Total 4 | |||||||||
Australia | 1,818,357 | 2,383,225 | 3,050,634 | 3,886,828 | 4,687,248 | 5,296,907 | 5,986,851 | 6,807,504 | 7,784,858 |
UKI | 444,506 | 421,377 | 501,725 | 539,510 | 407,076 | 474,344 | 524,557 | 757,689 | 808,069 |
Other | 69,793 | 71,439 | 71,138 | 72,611 | 68,127 | 205,966 | 286,139 | 331,012 | 425,024 |
Results
The denominator
Prevalence in 1981
Age | NSW | Queensland | South Australia | ||||||
---|---|---|---|---|---|---|---|---|---|
Pop |
N
| Rate | Pop |
N
| Rate | Pop |
N
| Rate | |
0–9 | 12,586 | 0 | – | 5,741 | 0 | – | 6,110 | 0 | – |
10–9 | 27,221 | 1 | 3.67 | 12,042 | 0 | – | 17,459 | 0 | – |
20–9 | 47,203 | 17 | 36.01 | 18,887 | 2 | 10.59 | 26,786 | 3 | 11.20 |
30–9 | 68,154 | 50 | 73.36 | 28,043 | 14 | 49.92 | 27,567 | 7 | 25.39 |
40–9 | 50,189 | 40 | 79.70 | 22,130 | 10 | 45.19 | 24,975 | 19 | 76.08 |
50–9 | 45,961 | 16 | 34.81 | 19,719 | 13 | 65.93 | 21,958 | 8 | 36.43 |
60–9 | 39,810 | 15 | 37.68 | 18,450 | 6 | 32.52 | 15,074 | 6 | 39.80 |
70+ | 46,391 | 2 | 4.31 | 22,091 | 6 | 27.16 | 12,205 | 1 | 8.19 |
Total | 337,515 | 141 | 41.78 | 147,103 | 51 | 34.67 | 152,134 | 44 | 28.92 |
Age adjusted rate | 31.52 | 24.37 | 21.45 |
Age | Western Australia | Four states | ||||
---|---|---|---|---|---|---|
Pop |
N
| Rate | Pop |
N
| Rate | |
0–9 | 10,397 | 0 | – | 34,834 | 0 | – |
10–9 | 22,526 | 1 | 4.44 | 79,248 | 2 | 2.52 |
20–9 | 28,357 | 2 | 7.05 | 121,233 | 24 | 19.80 |
30–9 | 37,223 | 15 | 40.30 | 160,987 | 86 | 55.28 |
40–9 | 29,714 | 21 | 70.67 | 127,008 | 90 | 74.80 |
50–9 | 21,868 | 10 | 45.73 | 109,506 | 47 | 47.49 |
60–9 | 18,589 | 12 | 64.55 | 91,923 | 39 | 47.87 |
70+ | 18,768 | 5 | 26.64 | 99,455 | 14 | 16.09 |
Total | 187,442 | 66 | 35.21 | 824,194 | 302 | 36.64 |
Age adjusted rate | 26.90 | 29.00 |
General features of MS in two groups of UKI immigrants
Feature | State | ||||
---|---|---|---|---|---|
NSW | QLD | SA | WA | Total four states | |
I. Early immigrants (before 1947) | |||||
N(F) | 19 (11) | 10(5) | 5 (3) | 10(6) | 44 (25) |
YOI | 1928.5 | 1927.7 | 1925.6 | 1927.8 | 1927.8 |
AAI | 6.6 | 16.9 | 7.8 | 8.5 | 9.5 |
YOO | 1960.5 | 1952.2 | 1963.0 | 1955.4 | 1957.7 |
AAO | 38.6 | 41.2 | 45.2 | 36.3 | 39.4 |
Age 81 | 59.1 | 70.2 | 63.2 | 61.4 | 62.6 |
YOB | 1921.9 | 1910.8 | 1917.8 | 1919.6 | 1918.4 |
∆ O–I | 31.9 | 24.3 | 37.4 | 27.8 | 29.9 |
II. Post war immigrants (1947+) | |||||
N(F) | 122 (86) | 41 (28) | 39 (27) | 56 (41) | 258 (182) |
YOI | 1963.4 | 1959.8 | 1962.7 | 1961.2 | 1962.3 |
AAI | 21.6 | 23.0 | 25.3 | 26.3 | 23.4 |
YOO | 1973.2 | 1969.2 | 1970.9 | 1970.4 | 1971.6 |
AAO | 31.3 | 32.4 | 35.4 | 35.6 | 33.0 |
Age 81 | 39.2 | 43.7 | 45.4 | 46.2 | 42.3 |
YOB | 1941.8 | 1937.3 | 1935.6 | 1934.8 | 1938.7 |
∆ O–I | 9.7 | 9.4 | 10.1 | 9.1 | 9.6 |
Both | |||||
N(F) | 141 (97) | 51 (33) | 44 (30) | 66 (47) | 302 (207) |
YOI | 1958.7 | 1953.5 | 1958.5 | 1956.1 | 1957.2 |
AAI | 19.6 | 21.8 | 23.3 | 23.6 | 21.4 |
YOO | 1971.5 | 1965.9 | 1970.0 | 1968.1 | 1969.6 |
AAO | 32.3 | 34.1 | 36.5 | 35.7 | 33.9 |
Age 81 | 41.8 | 48.9 | 47.4 | 48.5 | 45.3 |
YOB | 1939.2 | 1933.3 | 1933.6 | 1932.5 | 1935.9 |
∆ O–I | 12.7 | 12.3 | 13.2 | 11.9 | 12.5 |
Age at immigration and interval to MS onset in Group II UKI immigrants
AAI | N (F) | YOI | YOO | AAO | AAO–AAI |
---|---|---|---|---|---|
0–4 | 6 (5) | 1953.2 | 1973.2 | 22.3 | 20.0 |
5–9 | 26 (21) | 1953.8 | 1974.2 | 23.9 | 17.0 |
10–14 | 24 (21) | 1954.9 | 1973.0 | 27.5 | 15.8 |
0–14 | 56 (48) | 1954.2 | 1973.6 | 25.3 | 16.8 |
15–19 | 30 (19) | 1960.8 | 1971.4 | 27.9 | 14.9 |
20–24 | 43 (33) | 1964.7 | 1973.4 | 30.7 | 8.6 |
25–29 | 56 (42) | 1964.5 | 1972.1 | 35.1 | 7.8 |
15–29 | 129 (94) | 1963.7 | 1972.4 | 31.9 | 9.7 |
30–34 | 39 (19) | 1961.6 | 1968.2 | 38.9 | 7.0 |
15–34 | 168 (113) | 1963.2 | 1971.5 | 33.6 | 9.1 |
35–39 | 21(15) | 1964.9 | 1969.5 | 40.7 | 4.6 |
15–39 | 189 (128) | 1963.4 | 1971.3 | 34.3 | 8.6 |
40+ | 13 (7) | 1962.8 | 1967.5 | 47.8 | 4.6 |
Risk of MS by age at immigration
AAI | NSW | QLD | SA | WA | ||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
Pop |
N
| Risk | Pop |
N
| Risk | Pop |
N
| Risk | Pop |
N
| Risk | |
0–4 | 36,550 | 2 | 5.47 | 15,857 | 3 | 18.92 | 20,921 | 0 | 22,928 | 1 | 4.36 | |
5–9 | 32,654 | 14 | 42.87 | 14,618 | 5 | 34.20 | 20,482 | 4 | 19.53 | 21,636 | 3 | 13.87 |
10–14 | 24,306 | 13 | 53.48 | 10,826 | 4 | 36.95 | 145.21 | 2 | 13.77 | 15,332 | 5 | 32.61 |
15–19 | 22,494 | 20 | 88.91 | 9,111 | 2 | 21.95 | 9,297 | 3 | 32.27 | 11,433 | 5 | 43.73 |
20–24 | 36,473 | 26 | 71.29 | 13,809 | 4 | 28.97 | 11,497 | 6 | 52.19 | 17,793 | 7 | 39.34 |
25–29 | 36,551 | 23 | 62.93 | 15,101 | 9 | 59.61 | 14,607 | 11 | 75.31 | 20,019 | 13 | 64.94 |
30–34 | 28,359 | 15 | 52.89 | 1,293.7 | 7 | 54.11 | 15,459 | 6 | 38.81 | 17,844 | 11 | 61.65 |
35–39 | 21,148 | 5 | 23.64 | 9,995 | 5 | 50.03 | 13,023 | 6 | 46.07 | 13,828 | 5 | 36.16 |
40–44 | 13,874 | 3 | 21.62 | 6,779 | 2 | 29.50 | 8,321 | 1 | 12.02 | 8,586 | 5 | 58.23 |
45–48 | 7,651 | 1 | 13.07 | 3,856 | 0 | – | 4,261 | 0 | – | 4,750 | 0 | – |
50–54 | 4,238 | 0 | – | 2,209 | 0 | – | 2,278 | 0 | – | 2,941 | 1 | 34.00 |
55–59 | 3,037 | 0 | – | 1,617 | 0 | – | 1,768 | 0 | – | 2,460 | 0 | – |
60–64 | 2,608 | 0 | – | 1,440 | 0 | – | 1,572 | 0 | – | 2,272 | 0 | – |
65–69 | 1,803 | 0 | – | 1,057 | 0 | – | 1,076 | 0 | – | 1,642 | 0 | – |
70–74 | 794 | 0 | – | 546 | 0 | – | 417 | 0 | – | 723 | 0 | – |
75–79 | 273 | 0 | – | 168 | 0 | – | 111 | 0 | – | 198 | 0 | – |
Total | ||||||||||||
All | 272,813 | 122 | 44.72 | 119,926 | 41 | 34.19 | 139,611 | 39 | 27.93 | 164,385 | 56 | 34.07 |
0–39 | 238,535 | 118 | 49.47 | 102,254 | 39 | 38.14 | 119,807 | 38 | 31.72 | 140,613 | 50 | 35.56 |
0–14 | 93,510 | 29 | 31.01 | 41,301 | 12 | 29.01 | 55,924 | 6 | 10.73 | 59,896 | 9 | 15.03 |
15–39 | 145,025 | 89 | 61.37 | 60,953 | 27 | 44.30 | 63,883 | 32 | 50.09 | 80,917 | 41 | 50.67 |
15+ | 179,303 | 93 | 51.87 | 78,625 | 29 | 36.88 | 83,687 | 33 | 39.43 | 104,489 | 47 | 44.98 |
AAI | At risk population | MS | Risk | 95% CI | Significance |
---|---|---|---|---|---|
Total | 696,735 | 258 | 37.03 | 32.64–41.84 | |
0–14 | 250,631 | 56 | 22.34 | 16.88–29.02 |
Reference
|
15–19 | 52,335 | 30 | 57.32 | 38.68–81.84 | + |
15–24 | 131,907 | 73 | 55.34 | 43.38–69.60 | + |
15–29 | 218,185 | 129 | 59.12 | 49.36–70.25 | + |
15–34 | 292,784 | 168 | 57.38 | 49.03–66.74 | + |
15–39 | 350,778 | 189 | 53.88 | 46.47–62.13 | + |
15–44 | 388,338 | 200 | 51.50 | 44.61–59.16 | + |
15–49 | 408,856 | 201 | 49.16 | 42.60–56.45 | + |
15–54 | 420,522 | 202 | 48.04 | 41.64–55.14 | + |
15+ | 446,104 | 202 | 45.28 | 39.25–51.98 | + |