TABLE 1

Selected Characteristics for NHI Enrollees With Birth Years 1996–2001, Taiwan

Variable199619971998199920002001
No. of enrollees329 539330 141273 140287 816310 232260 098
Years under observation
    Maximum876543
Gender
    Female157 722 (47.86)157 997 (47.86)130 827 (47.90)137 333 (47.72)148 203 (47.77)124 612 (47.91)
    Male171 811 (52.14)172 142 (52.14)142 311 (52.10)150 483 (52.28)162 029 (52.23)135 486 (52.09)
EC
    133 470 (10.16)33 358 (10.1)26 104 (9.56)27 899 (9.69)28 466 (9.18)26 168 (10.06)
    2150 383 (45.63)154 131 (46.69)127 369 (46.63)138 794 (48.22)151 181 (48.73)126 044 (48.46)
    3102 217 (31.02)96 636 (29.27)77 376 (28.33)78 402 (27.24)83 839 (27.02)68 833 (26.46)
    443 469 (13.19)46 016 (13.94)42 291 (15.48)42 721 (14.84)46 746 (15.07)39 053 (15.01)
Region
    Northern165 348 (50.18)165 972 (50.27)137 645 (50.39)145 885 (50.69)157 843 (50.88)132 806 (51.06)
    Central63 894 (19.39)63 942 (19.37)526 59 (19.28)55 958 (19.44)58 848 (18.97)50 306 (19.34)
    Southern90 049 (27.33)90 007 (27.26)74 198 (27.16)77 097 (26.79)84 301 (27.17)69 080 (26.56)
    Eastern8241 (2.50)8007 (2.43)6816 (2.50)6907 (2.40)7022 (2.26)6062 (2.33)
    NS or NA2007 (0.61)2213 (0.67)1822 (0.67)1969 (0.68)2218 (0.71)1844 (0.71)
Urbanicity
    Urban95 158 (28.88)94 520 (28.63)76 491 (28.00)80 946 (28.12)86 096 (27.75)70 693 (27.18)
    Suburban166 563 (50.54)165 763 (50.21)136 960 (50.14)144 294 (50.13)155 765 (50.21)130 683 (50.24)
    Rural61 420 (18.64)63 101 (19.11)53 958 (19.75)56 239 (19.54)60 815 (19.60)51 960 (19.98)
    NS or NA6398 (1.94)6757 (2.05)5731 (2.10)6337 (2.20)7556 (2.44)6762 (2.60)
MR (cumulative incidence)
    No325 271 (98.71)326 366 (98.86)270 618 (99.08)286 160 (99.42)309 051 (99.62)259 390 (99.73)
    Yes4268 (1.29)3775 (1.14)2522 (0.92)1656 (0.58)1181 (0.38)708 (0.27)
ADHD (cumulative incidence)
    No320 647 (97.31)321 579 (97.41)267 267 (97.85)283 442 (98.48)307 187 (99.02)258 656 (99.45)
    Yes8892 (2.69)8562 (2.59)5873 (2.15)4374 (1.52)3045 (0.98)1442 (0.55)
Autism (cumulative incidence)
    No328 424 (99.66)328 802 (99.60)272 015 (99.59)286 694 (99.61)309 037 (99.61)259 321 (99.70)
    Yes1115 (0.34)1339 (0.40)1125 (0.41)1122 (0.39)1195 (0.39)777 (0.30)
  • NS indicates not significant; NA, not applicable.