Table 4. Crude, age-specific and age-standardised annual attack (first-ever and recurrent strokes combined) rates per 100,000 people-years in Auckland, New Zealand across four study periods (1981–1982, 1991–1992, 2002–2003 and 2011–2012) by sex and ethnicity.
| Age, sex and ethnicity group | 1981–1982 | 1991–1992 | 2002–2003 | 2011–2012 | P value for trend | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| N | n | Rate (95% CI) | N | n | Rate (95% CI) | N | n | Rate (95% CI) | N | n | Rate (95% CI) | ||
| Total | |||||||||||||
| 15–64* | 518112 | 350 | 68 (58;78) | 624828 | 433 | 69 (61; 77) | 788106 | 484 | 61 (56; 67) | 956037 | 626 | 65 (60; 71) | |
| 65–74 | 49812 | 380 | 763 (654; 871) | 56388 | 512 | 908 (795; 1021) | 59454 | 460 | 774 (703; 844) | 95190 | 476 | 500 (455; 545) | |
| 75–84 | 22965 | 498 | 2169 (1899; 2438) | 31701 | 611 | 1927 (1730; 2125) | 37815 | 667 | 1764 (1630; 1898) | 48387 | 598 | 1236 (1137; 1335) | |
| 85+ | 5691 | 178 | 3128 (2478; 3778) | 8541 | 247 | 2892 (2460; 3324) | 12507 | 390 | 3118 (2809; 3428) | 19578 | 448 | 2288 (2076; 2500) | |
| Total | 596580 | 1406 | 236 (218; 253) | 721458 | 1803 | 250 (235; 265) | 897882 | 2001 | 223 (213; 233) | 1119192 | 2148 | 192 (184; 200) | <0.0001 |
| Standardised § | 211 (196; 228) | 213 (201; 227) | 193 (185; 202) | 153 (147; 160) | <0.0001 | ||||||||
| Male | |||||||||||||
| 15–64* | 256500 | 204 | 80 (64; 95) | 308997 | 252 | 82 (69; 94) | 380139 | 273 | 72 (63; 80) | 461418 | 323 | 70 (62; 78) | |
| 65–74 | 22251 | 224 | 1007 (820; 1193) | 25452 | 290 | 1139 (947; 1332) | 28173 | 273 | 969 (854; 1084) | 45678 | 272 | 595 (525; 666) | |
| 75–84 | 8742 | 216 | 2471 (2005; 2937) | 11946 | 252 | 2109 (1768; 2451) | 15210 | 277 | 1821 (1607; 2036) | 21759 | 305 | 1402 (1244; 1559) | |
| 85+ | 1509 | 46 | 3048 (1803; 4294) | 2421 | 41 | 1694 (1175; 2212) | 3633 | 95 | 2615 (2089; 3141) | 6807 | 138 | 2027 (1689; 2366) | |
| Total | 289002 | 690 | 239 (214; 264) | 348816 | 835 | 239 (218; 261) | 427155 | 918 | 215 (201; 229) | 535662 | 1038 | 194 (182; 206) | <0.0001 |
| Standardised § | 248 (223; 276) | 236 (216; 258) | 214 (200; 228) | 167 (157; 178) | <0.0001 | ||||||||
| Female | |||||||||||||
| 15–64* | 261612 | 146 | 56 (43; 69) | 315831 | 181 | 57 (47; 67) | 407967 | 211 | 52 (45; 59) | 494631 | 303 | 61 (54; 68) | |
| 65–74 | 27561 | 156 | 566 (440; 692) | 30936 | 222 | 718 (587; 848) | 31281 | 187 | 598 (512; 683) | 49509 | 204 | 412 (356; 469) | |
| 75–84 | 14223 | 282 | 1983 (1655; 2310) | 19755 | 359 | 1817 (1577; 2058) | 22605 | 390 | 1725 (1554; 1897) | 26634 | 293 | 1100 (974; 1226) | |
| 85+ | 4182 | 132 | 3156 (2395; 3918) | 6120 | 206 | 3366 (2799; 3934) | 8874 | 295 | 3324 (2945; 3704) | 12771 | 310 | 2427 (2157; 2698) | |
| Total | 307578 | 716 | 233 (209; 257) | 372642 | 968 | 260 (239; 281) | 470727 | 1083 | 230 (216; 244) | 583545 | 1110 | 190 (179; 201) | <0.0001 |
| Standardised § | 181 (163; 201) | 190 (175; 206) | 173 (162; 184) | 140 (132; 149) | <0.0001 | ||||||||
| NZ European | |||||||||||||
| 15–64* | 422202 | 276 | 65 (54; 76) | 459267 | 293 | 64 (55; 73) | 501426 | 269 | 54 (47; 60) | 450759 | 288 | 64 (57; 71) | |
| 65–74 | 47481 | 354 | 746 (636; 855) | 52125 | 459 | 881 (764; 997) | 48633 | 303 | 623 (553; 693) | 64806 | 312 | 481 (428; 535) | |
| 75–84 | 22209 | 488 | 2197 (1922; 2473) | 30303 | 579 | 1911 (1709; 2113) | 34332 | 568 | 1654 (1518; 1790) | 35916 | 470 | 1309 (1190; 1427) | |
| 85+ | 5577 | 174 | 3120 (2464; 3776) | 8253 | 241 | 2920 (2476; 3364) | 11790 | 345 | 2926 (2617; 3235) | 16776 | 400 | 2384 (2151; 2618) | |
| Total | 497469 | 1292 | 260 (240; 280) | 549948 | 1572 | 286 (267; 305) | 596181 | 1485 | 249 (236; 262) | 568257 | 1470 | 259 (245; 272) | 0.165 |
| Standardised § | 209 (193; 226) | 206 (193; 220) | 171 (162; 180) | 154 (145; 163) | <0.0001 | ||||||||
| Māori | |||||||||||||
| 15–64* | 52179 | 46 | 88 (52; 124) | 63762 | 58 | 91 (63; 119) | 77742 | 60 | 77 (58; 97) | 88470 | 88 | 99 (79; 120) | |
| 65–74 | 1266 | 10 | 790 (98; 1482) | 1344 | 8 | 595 (183; 1008) | 2282 | 24 | 1047 (628; 1466) | 4452 | 25 | 562 (341; 782) | |
| 75–84 | 336 | 6 | 1786 (-235; 3806) | 429 | 14 | 3263 (1554; 4973) | 654 | 15 | 2294 (1133; 3454) | 1572 | 24 | 1527 (916; 2138) | |
| 85+ | 51 | 0 | 0 | 72 | 2 | 2778 (-1072; 6628) | 144 | 5 | 3472 (429; 6516) | 243 | 4 | 1646 (33; 3259) | |
| Total | 53832 | 62 | 115 (75; 156) | 65607 | 104 | 129 (104; 153) | 80832 | 104 | 129 (104; 153) | 94737 | 141 | 149 (124; 173) | 0.073 |
| Standardised § | 192 (122; 304) | 254 (188; 341) | 247 (196; 311) | 192 (161; 229) | 0.867 | ||||||||
| Pacific | |||||||||||||
| 15–64* | 33672 | 22 | 65 (27; 104) | 64506 | 65 | 101 (74; 127) | 89724 | 88 | 98 (78; 119) | 107688 | 155 | 144 (121; 167) | |
| 65–74 | 741 | 10 | 1350 (167; 2532) | 2025 | 33 | 1630 (899; 2360) | 3840 | 67 | 1745 (1327; 2163) | 6417 | 64 | 997 (753; 1242) | |
| 75–84 | 213 | 0 | 0 | 597 | 13 | 2178 (536; 3819) | 1392 | 39 | 2802 (1922; 3661) | 2679 | 45 | 1680 (1189; 2171) | |
| 85+ | 33 | 0 | 0 | 108 | 2 | 1852 (-715; 4418) | 246 | 8 | 3252 (998; 5506) | 582 | 15 | 2577 (1273; 3882) | |
| Total | 34659 | 32 | 92 (47; 138) | 67236 | 113 | 168 (131; 205) | 95202 | 202 | 212 (183; 241) | 117366 | 279 | 238 (210; 266) | <0.0001 |
| Standardised § | 152 (85; 274) | 291 (220; 384) | 329 (284; 382) | 275 (244; 310) | 0.012 | ||||||||
| Asian/other | |||||||||||||
| 15–64* | 10059 | 6 | 60 (-8; 127) | 37293 | 17 | 46 (17; 74) | 119214 | 64 | 54 (41; 67) | 309123 | 95 | 31 (25; 37) | |
| 65–74 | 324 | 6 | 1852 (-244; 3947) | 894 | 12 | 1342 (268; 2416) | 4689 | 55 | 1173 (863; 1483) | 19515 | 74 | 379 (293; 466) | |
| 75–84 | 207 | 4 | 1932 (-746; 4610) | 372 | 5 | 1344 (166; 2522) | 1437 | 34 | 2366 (406; 3161) | 8220 | 58 | 706 (524; 887) | |
| 85+ | 30 | 4 | 13333 (-5146; 31812) | 108 | 2 | 1852 (-715; 4418) | 327 | 10 | 3058 (1163; 4954) | 1971 | 29 | 1471 (936; 2007) | |
| Total | 10620 | 20 | 188 (72; 305) | 38667 | 36 | 93 (54; 132) | 125667 | 163 | 130 (110; 150) | 338829 | 256 | 76 (66; 85) | <0.0001 |
| Standardised § | 360 (185; 701) | 194 (122; 310) | 234 (197; 277) | 90 (79; 101) | <0.0001 | ||||||||
* 16–64 in 2011–2012,
§ Age-standardised to WHO world population