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Table 1 Estimated parameters for the sample distribution of children and adolescents included in the study to establish the reference intervals for lipids after excluding the outliers

From: Serum lipids in Brazilian children and adolescents: determining their reference intervals

Parameter Age group (years) n Mean (SD) 1stquartile Median 3rdquartile Range (mg/dL) RI (mg/dL)
Total cholesterol (mg/dL) n = 1858 1 to 2 428 142.6 (26.7) 125 141 159.8 62 - 225 89-196
3 to 8 1,085 153.4 (25.9) 136 153 169 79 - 231 102-205
9 to 12 345 157.2 (27.3) 139 155 176 74 - 244 103-212
HDL cholesterol (mg/dL) n = 1848 1 179 33.8 (7.8) 29 34 39 12 - 56 18-49
2 245 38.8 (8.4) 33 39 44 19 - 65 22-55
3 279 42.6 (9.3) 36 42 49 22 - 71 24-61
4 to 12 1,145 48.5 (10.5) 41 48 55 20 - 82 27-69
Non-HDL cholesterol (mg/dL) n = 1854 1 to 12 1,854 106.4 (24,5) 90 104.5 122 33 - 183 57-155
LDL cholesterol (mg/dL) n = 1856 1 to 8 1,512 89.3 (23.1) 74 88 103 24 - 161 43-135
9 to 12 344 92.6 (23.5) 76.2 92 106 25 - 167 45-140
Triglycerides (mg/dL) n = 1839 1 178 100.8 (37.4) 73 93 123.8 31 - 230 26-176
2 to 5 847 81.2 (27.1) 61 77 97 25 - 175 27-135
6 to 12 814 75.7 (29.1) 54 71 90 22 - 181 17-134
  1. SD: standard deviation; RI: reference interval.