Background
Method
Data collection
Weighting
Analysis
Results
Age group (years) | 1983 | 1988 | 1993 | 1998 | 2003 | 2009 | All | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
N | (%) | N | (%) | N | (%) | N | (%) | N | (%) | N | (%) | N | (%) | |
20-24
| 6 | 1.7 | 24 | 5.2 | 18 | 4.2 | 15 | 3.3 | 17 | 3.3 | 16 | 2.6 | 96 | 3.4 |
25-29
| 62 | 17.8 | 77 | 16.7 | 62 | 14.6 | 69 | 15.4 | 60 | 11.8 | 98 | 15.6 | 428 | 15.2 |
30-34
| 64 | 18.3 | 94 | 20.4 | 69 | 16.2 | 62 | 13.8 | 78 | 15.3 | 107 | 17.1 | 474 | 16.8 |
35-39
| 49 | 14.0 | 73 | 15.8 | 86 | 20.2 | 84 | 18.7 | 62 | 12.2 | 87 | 13.9 | 441 | 15.6 |
40-44
| 43 | 12.3 | 49 | 10.6 | 55 | 12.9 | 80 | 17.8 | 98 | 19.2 | 64 | 10.2 | 389 | 13.8 |
45-49
| 29 | 8.3 | 46 | 10.0 | 48 | 11.3 | 54 | 12.0 | 84 | 16.5 | 78 | 12.4 | 339 | 12.0 |
50-54
| 27 | 7.7 | 27 | 5.9 | 31 | 7.3 | 37 | 8.2 | 54 | 10.6 | 82 | 13.1 | 258 | 9.1 |
55-59
| 40 | 11.5 | 26 | 5.6 | 19 | 4.5 | 24 | 5.4 | 29 | 5.7 | 45 | 7.2 | 183 | 6.5 |
60-64
| 16 | 4.6 | 27 | 5.9 | 18 | 4.2 | 9 | 2.0 | 14 | 2.8 | 34 | 5.4 | 118 | 4.2 |
65-69
| 7 | 2.0 | 11 | 2.4 | 13 | 3.1 | 4 | 0.9 | 8 | 1.6 | 12 | 1.9 | 55 | 1.9 |
70-74
| 4 | 1.2 | 5 | 1.1 | 3 | 0.7 | 10 | 2.2 | 2 | 0.4 | 3 | 0.5 | 27 | 1.0 |
75-79
| 1 | 0.3 | 0 | 0.0 | 3 | 0.7 | 0 | 0.0 | 4 | 0.8 | 0 | 0.0 | 8 | 0.3 |
80-84
| 1 | 0.3 | 1 | 0.2 | 0 | 0.0 | 1 | 0.2 | 0 | 0.0 | 1 | 0.2 | 4 | 0.1 |
85-89
| 0 | 0.0 | 1 | 0.2 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 1 | 0.0 |
Total
| 349 | 100. | 461 | 100 | 425 | 100 | 449 | 100 | 510 | 100 | 627 | 100. | 2821 | 100 |
Age group (years) | 1983 | 1988 | 1993 | 1998 | 2003 | 2009 | All | |||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Mean | SE | Mean | SE | Mean | SE | Mean | SE | Mean | SE | Mean | SE | Mean | SE | |
20-24
| 2103 | 356 | 2365 | 163 | 2789 | 236 | 1550 | 199 | 2301 | 262 | 2033 | 186 | 2231 | 96 |
25-29
| 3005 | 151 | 2743 | 123 | 2853 | 146 | 2375 | 111 | 2505 | 138 | 2172 | 89 | 2617 | 53 |
30-34
| 3902 | 200 | 3048 | 137 | 2638 | 155 | 2662 | 166 | 2472 | 128 | 2211 | 113 | 2772 | 64 |
35-39
| 3807 | 200 | 3565 | 177 | 2790 | 132 | 2435 | 109 | 2402 | 152 | 2440 | 128 | 2845 | 64 |
40-44
| 3506 | 238 | 3326 | 190 | 3496 | 162 | 2772 | 144 | 2652 | 118 | 2630 | 228 | 2979 | 73 |
45-49
| 3425 | 314 | 3199 | 212 | 2899 | 173 | 3033 | 157 | 2788 | 123 | 2410 | 128 | 2859 | 69 |
50-54
| 3267 | 208 | 3531 | 332 | 3036 | 269 | 2884 | 225 | 2746 | 154 | 2529 | 135 | 2889 | 84 |
55-59
| 3533 | 303 | 3218 | 177 | 2870 | 241 | 2660 | 305 | 2904 | 183 | 2682 | 233 | 3005 | 106 |
60-64
| 3529 | 409 | 2952 | 335 | 2354 | 171 | 2805 | 350 | 2233 | 348 | 2404 | 156 | 2603 | 115 |
65-69
| 2424 | 667 | 1835 | 257 | 1818 | 292 | 1499 | 343 | 1249 | 273 | 2779 | 492 | 2000 | 185 |
70-74
| 2030 | 466 | 2833 | 945 | 888 | 168 | 1961 | 377 | 1115 | 425 | 1821 | 1043 | 1891 | 256 |
75-79
| 1000 | 1871 | 818 | 2518 | 1028 | 648 | 2200 | 602 | ||||||
80-84
| 490 | 320 | 476 | 103 | ||||||||||
85-89
| 1000 | 1000 | . | |||||||||||
Total
|
3405
|
82
|
3097
|
65
|
2816
|
61
|
2589
|
58
|
2550
|
52
|
2418
|
51
|
2762
|
25
|
Models | Number | Degrees of freedom | R squared | F value | P > F |
---|---|---|---|---|---|
Age
| 2776 | 13 | 0.039 | 8.6 | <0.0001 |
Age-drift
| 2776 | 14 | 0.099 | 21.6 | <0.0001 |
Age-period
| 2776 | 18 | 0.102 | 17.4 | <0.0001 |
Age-cohort
| 2776 | 29 | 0.111 | 11.8 | <0.0001 |
Age-period-cohort
| 2776 | 33 | 0.115 | 10.8 | <0.0001 |
Degrees of freedom | F value | P-value | |||
---|---|---|---|---|---|
Models | k | m | n-k-m-1 | ||
Age & age drift
| 13 | 13 | 2761 | 9.66 | <0.005 |
Age drift & age-period
| 14 | 14 | 2756 | 8.88 | <0.005 |
Age drift & age-cohort
| 14 | 14 | 2744 | 13.96 | <0.005 |
Age-period-Cohort & age-Cohort
| 29 | 29 | 2741 | 5.64 | <0.005 |
Age-period-Cohort & age-Period
| 18 | 18 | 2740 | 11.52 | <0.005 |
Age-period model | Age-cohort model | |||||
---|---|---|---|---|---|---|
Parameter estimate | SE | P | Parameter estimate | SE | P | |
Age group
| ||||||
20-24
| -575.72 | 167.87 | 0.0006 | -227.75 | 183.01 | 0.21 |
25-29
| -215.46 | 91.67 | 0.0188 | 21.21 | 97.33 | 0.83 |
30-34
| 0.00 | 0.00 | ||||
35-39
| 81.60 | 91.10 | 0.3705 | -148.17 | 94.88 | 0.12 |
40-44
| 259.74 | 92.16 | 0.0049 | -163.53 | 99.14 | 0.10 |
45-49
| 168.54 | 94.43 | 0.0744 | -447.04 | 105.24 | <.0001 |
50-54
| 200.62 | 96.90 | 0.0385 | -623.58 | 112.21 | <.0001 |
55-59
| 197.47 | 104.71 | 0.0594 | -811.74 | 131.32 | <.0001 |
60-64
| -85.57 | 114.86 | 0.4563 | -1244.09 | 144.70 | <.0001 |
65-69
| -685.31 | 152.71 | <.0001 | -2006.21 | 185.03 | <.0001 |
70-74
| -805.75 | 199.77 | <.0001 | -2291.59 | 245.17 | <.0001 |
75-79
| -465.99 | 341.60 | 0.1726 | -2067.34 | 392.57 | <.0001 |
80-84
| -2153.59 | 546.17 | <.0001 | -3731.77 | 620.80 | <.0001 |
85-89
| -2104.31 | 1170.04 | 0.0722 | -2054.34 | 1167.05 | 0.08 |
Period
| ||||||
1983
| 993.34 | 85.61 | <.0001 | |||
1988
| 706.21 | 79.16 | <.0001 | |||
1993
| 409.65 | 80.80 | <.0001 | |||
1998
| 188.70 | 79.83 | 0.0182 | |||
2003
| 107.99 | 76.62 | 0.1588 | |||
2009
| 0.00 | |||||
Cohort
| ||||||
80-84 (a)
| - | - | 648.55 | 958.64 | 0.50 | |
75-79 (a)
| - | - | 1267.25 | 686.92 | 0.07 | |
70-74 (a)
| - | - | 1393.63 | 356.46 | <.0001 | |
65-69 (a)
| - | - | 1223.43 | 274.77 | <.0001 | |
60-64 (a)
| - | - | 1175.36 | 161.98 | <.0001 | |
50-59 (a)
| - | - | 772.51 | 153.49 | <.0001 | |
45-49 (a)
| - | - | 833.53 | 137.42 | <.0001 | |
40-44 (a)
| - | - | 690.22 | 117.07 | <.0001 | |
35-39 (a)
| - | - | 551.33 | 102.35 | <.0001 | |
30-34 (a)
| - | - | 545.69 | 92.84 | <.0001 | |
25-29 (a)
| - | - | 0.00 | |||
20-24 (a)
| - | - | -330.88 | 89.43 | 0.00 | |
20-24 (b)
| - | - | -352.63 | 102.26 | 0.00 | |
20-24 (c)
| - | - | -539.13 | 114.43 | <.0001 | |
20-24 (d)
| - | - | -778.79 | 131.20 | <.0001 | |
20-24 (e)
| - | - | -847.71 | 162.35 | <.0001 | |
20-24 (f)
| -793.63 | 455.75 | 0.08 |