Research Article
Age- and Sex-Specific Reference Intervals for Myocardial Enzyme Activity in Healthy Chinese Han Population Aged 1∼<18 years
Table 2
Percentiles of myocardial enzyme activity indicators of Chinese Han children (n = 6322).
| | Age (year) | n | n, M/F | Height (cm), M/F | Weight (kg), M/F | BMI (cm/kg2), M/F | AST (U/L) | LDH (U/L) | CK (U/L) | CKMB (U/L) | | P2.5 | P25 | P50 | P75 | P97.5 | P2.5 | P25 | P50 | P75 | P97.5 | P2.5 | P25 | P50 | P75 | P97.5 | P2.5 | P25 | P50 | P75 | P97.5 |
| | 1∼<2 | 263 | 128/135 | 83.8/83.2 | 11.0/10.9 | 15.7/15.7 | 29.1 | 36.2 | 41.6 | 50.6 | 57.2 | 458.8 | 586.0 | 641.0 | 696.0 | 829.0 | 24.3 | 60.5 | 92.6 | 125.8 | 220.1 | 11.6 | 22.7 | 27.0 | 31.4 | 41.1 | | 2∼<3 | 468 | 231/237 | 95.1/93.8 | 14.4/13.8 | 15.8/15.7 | 24.8 | 29.9 | 33.1 | 36.2 | 44.6 | 459.7 | 545.0 | 592.0 | 642.0 | 732.5 | 46.2 | 71.0 | 94.2 | 112.7 | 187.4 | 15.2 | 23.4 | 28.0 | 32.5 | 41.5 | | 3∼<4 | 384 | 191/193 | 102.0/100.0 | 16.3/15.7 | 15.7/15.6 | 24.7 | 28.2 | 31.2 | 34.0 | 41.1 | 450.0 | 533.0 | 577.0 | 613.0 | 712.4 | 46.5 | 75.6 | 93.7 | 114.9 | 173.4 | 10.6 | 20.4 | 25.5 | 30.5 | 39.0 | | 4∼<5 | 247 | 123/124 | 110.0/106.9 | 19.1/17.9 | 15.7/15.6 | 22.1 | 26.9 | 29.8 | 33.0 | 39.9 | 416.8 | 502.0 | 546.0 | 600.0 | 676.6 | 47.5 | 75.5 | 94.8 | 121.5 | 185.7 | 12.2 | 20.2 | 24.5 | 28.8 | 37.0 | | 5∼<6 | 614 | 297/317 | 117.4/115.9 | 21.3/20.6 | 15.4/15.3 | 22.2 | 27.2 | 29.8 | 33.1 | 40.0 | 424.4 | 505.0 | 552.0 | 601.3 | 705.4 | 54.0 | 81.8 | 102.5 | 126.7 | 187.4 | 9.6 | 19.0 | 23.2 | 26.7 | 35.1 | | 6∼<7 | 243 | 122/121 | 122.9/121.7 | 24.0/23.2 | 15.8/15.7 | 20.3 | 25.3 | 27.9 | 32.2 | 39.3 | 419.2 | 490.0 | 528.0 | 581.0 | 680.3 | 42.2 | 77.7 | 95.1 | 112.3 | 170.8 | 10.2 | 16.8 | 20.7 | 25.0 | 34.0 | | 7∼<8 | 243 | 123/120 | 128.6/128.8 | 25.8/25.8 | 15.5/15.5 | 19.7 | 25.0 | 27.4 | 32.1 | 39.1 | 421.1 | 484.0 | 522.0 | 580.0 | 664.3 | 29.6 | 68.8 | 88.2 | 115.8 | 161.8 | 2.7 | 14.9 | 19.5 | 23.2 | 32.3 | | 8∼<9 | 283 | 162/121 | 136.8/133.6 | 30.4/28.8 | 16.2/16.1 | 19.3 | 23.3 | 25.8 | 28.6 | 36.6 | 419.5 | 495.0 | 532.0 | 569.0 | 652.9 | 43.8 | 76.2 | 93.6 | 115.7 | 163.4 | 7.5 | 16.8 | 20.3 | 24.1 | 31.8 | | 9∼<10 | 446 | 224/222 | 142.9/142.6 | 33.6/33.2 | 16.4/16.2 | 18.3 | 22.1 | 24.8 | 28.5 | 34.5 | 405.5 | 481.0 | 532.0 | 574.3 | 653.6 | 38.8 | 75.7 | 98.3 | 115.7 | 170.6 | 9.3 | 16.8 | 20.3 | 23.9 | 32.3 | | 10∼<11 | 398 | 207/191 | 149.9/150.9 | 39.8/39.7 | 17.6/17.4 | 16.1 | 20.4 | 22.9 | 26.5 | 34.1 | 381.0 | 477.8 | 518.0 | 567.3 | 655.0 | 44.9 | 75.7 | 100.4 | 124.6 | 184.2 | 8.9 | 16.2 | 19.2 | 22.8 | 31.5 | | 11∼<12 | 436 | 192/244 | 158.7/157.7 | 45.4/45.4 | 18.0/18.2 | 15.5 | 19.2 | 21.3 | 24.0 | 32.8 | 353.9 | 440.0 | 484.0 | 537.0 | 647.3 | 47.7 | 75.2 | 96.7 | 118.3 | 166.6 | 6.2 | 14.9 | 19.3 | 24.5 | 34.7 | | 12∼<13 | 715 | 362/353 | 164.4/161.0 | 51.1/48.4 | 18.9/18.6 | 15.0 | 18.3 | 20.5 | 23.5 | 30.4 | 341.9 | 416.0 | 462.0 | 522.0 | 640.2 | 43.0 | 73.5 | 92.4 | 118.2 | 186.5 | 4.4 | 11.9 | 17.7 | 23.3 | 35.0 | | 13∼<14 | 507 | 250/257 | 169.8/161.9 | 55.3/50.9 | 19.1/19.4 | 14.1 | 18.0 | 20.3 | 22.7 | 29.7 | 327.7 | 401.0 | 446.0 | 491.0 | 588.0 | 41.2 | 67.5 | 87.9 | 118.8 | 225.0 | 3.3 | 9.9 | 14.3 | 19.9 | 31.0 | | 14∼<15 | 246 | 122/124 | 171.1/163.2 | 57.8/54.1 | 19.7/20.3 | 14.7 | 17.8 | 20.2 | 22.6 | 33.8 | 335.1 | 410.3 | 462.0 | 500.0 | 600.0 | 38.8 | 68.0 | 88.6 | 109.8 | 176.5 | 2.7 | 6.9 | 9.8 | 14.9 | 29.6 | | 15∼<16 | 330 | 132/198 | 175.0/163.7 | 62.8/53.8 | 20.5/20.1 | 13.9 | 17.6 | 19.8 | 22.3 | 30.8 | 314.8 | 392.0 | 431.0 | 464.5 | 558.7 | 34.7 | 60.6 | 79.4 | 103.1 | 176.2 | 2.7 | 5.0 | 8.0 | 11.3 | 19.2 | | 16∼<17 | 247 | 124/123 | 176.5/164.3 | 64.4/54.1 | 20.7/20.0 | 13.9 | 17.4 | 19.7 | 22.9 | 33.5 | 305.2 | 380.0 | 427.0 | 475.0 | 564.8 | 38.8 | 58.0 | 78.0 | 117.5 | 205.1 | 2.7 | 7.8 | 10.5 | 13.6 | 19.7 | | 17∼<18 | 252 | 129/123 | 180.0/164.2 | 67.9/55.4 | 20.9/20.5 | 13.1 | 16.6 | 18.8 | 21.8 | 27.1 | 306.6 | 371.8 | 409.0 | 457.0 | 543.0 | 31.8 | 53.3 | 71.3 | 94.2 | 152.1 | 2.7 | 2.7 | 5.9 | 8.6 | 14.4 |
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