Table 6.
Skewness (L), median (M) and coefficient of variation (S) equations of reference data in girls by height.
| L | M | S | |
|---|---|---|---|
| Bone mineral densities: | |||
| tibia 4% trabecular bone density | 0,8008 | 88,7287+0,735593*height | 0,1293 |
| tibia 4% total bone density | 0,2044 | -6078,6+190,03*height-2,1054*height2+1,02027*10-2*height3 -1,8196*10-5*height4 | 149,4879-6,61461617*height+ 0,12119936*height2-1,176517*10-3 *height3+6,3816565*10-6*height4 -1,833856*10-8*height5+ 2,1810967*10-11*height6 |
| tibia 14% cortical bone density | 3,7614 | -14140+457,707*height -5,1248*height2+2,50793*10-2*height3 -4,5078*10-5*height 4 | -2,0819*10-2+3,96338*10-4*height |
| tibia 38% cortical bone density | 4,7061 | -8541,9+292,895*height -3,2997*height2+1,62225*10-2*height3 -2,9235*10-5*height4 | -5,5760447+0,2039556*height-2,9492889*10-3*height2+2,11052*10-5*height3-7,457398*10-8*height4+1,03945937*10-10*height5 |
| Bone masses: | |||
| tibia 4% bone mass | 5,78833-3,9634*10-2*height | 1,90092-1,8843*10-2*height+8,8671* 10-7*height3 | 0,1162 |
| tibia 14% bone mass | 1,2970 | -50,146+1,62406*height-1,9249*10-2 *height2+9,99644*10-5 *height3-1,897*10 -7*height4 | 8,8153*10-2 |
| tibia 38% bone mass | 1,8123 | 27,4799-0,58537*height+4,15938*10-3*height2-9,1412*10-6*height3 | 3,13279*10-2+3,75259*10-4*height |
| Cross-sectional bone dimensions: | |||
| tibia 14% inner cortical bone circumference | -2,0249 | -14,38+0,5949*height-9,5597 *10-4*height2 | -11,202+0,4323*height-6,5365*10-3*height2+4,8577*10-5*height3-1,7734*10-7*height4+2,547*10-10*height5 |
| tibia 38% inner cortical bone circumference | 1,2946 | 584,472-15,694*height+0,1618*height2-7,2212*10-4*height3+1,1910*10-6*height4 | 0,8097-3,311*10-2*height+4,50197* 10-4*height2-2,4548* 10-6*height3+4,7361*10-9*height4 |
| tibia 14% outer cortical bone circumference | -1,8520 | 397,801-8,2336*height+6,2229*10-2*height2-1,4698*10-4*height3 | 4,67529*10-3+3,0756*10-4*height |
| tibia 38% outer cortical bone circumference | 2,8056 | 353,243-7,307*height+5,5441*10-2*height2-1,3121*10-4*height3 | 2,04158-6,239*10-2*height+ 7,0782*10-4*height2-3,4915*10-6 *height3+6,3588*10-9*height4 |
| tibia 14% cortical shell thickness | 0,7147 | 14,2147-0,28795*height+2,05653*10-3*height2-4,5314*10-6*height3 | 551,30068-23,842202*height+ 0,42727205*height2-4,06019945* 10-3*height3+2,15755569*10-5*height4-6,07850668*10-8*height5+ 7,09298513*10-11*height6 |
| tibia 38% cortical shell thickness | 1,0490 | 25,0294-0,52953*height+3,9816*10-3*height2-9,2041*10-6*height3 | 7,9529*10-2 |
| tibia 14% cortical bone cross-sectional area | -0,41225 | 994,614-21,17*height+0,151302*height2-3,2654*10-4*height3 | 0,1004 |
| tibia 38% cortical bone cross-sectional area | 1,2621 | 2407,38-52,67*height+0,385324* height2-8,8154*10-4*height3 | -123,51397+5,5815059*height-0,10439186*height2+1,0340742* 10-3*height3-5,717897*10-6* height4+1,6726876*10-8*height5- 2,0219798*10-11*height6 |
| tibia 4% total bone cross-sectional area | -1,5938 | -38,463-0,9026*height+4,0533 *10-2*height2 | 1,6331*10-2+6,2032*10-4*height |
| tibia 14% total bone cross-sectional area | -0,9468 | 3915,37-85,552*height+0,6306*height2-1,4566*10-3*height3 | 2,31054-6,7461*10-2*height+ 7,3997*10-4*height2-3,505*10-6* height3+6,1093*10-9*height4 |
| tibia 38% total bone cross-sectional area | 1,3630 | 3594,13-78,785*height+0,581793* height2-1,3516*10-3*height3 | -1,2402*10-2+6,5998*10-4*height |
| Longitudinal shape indexes: | |||
| tibia 4% bone mass/tibia 38% bone mass | -0,3934 | -411,262+18,746*height-0,35322453*height2+3,5276424*10-3*height3-1,968711*10-5*height4+5,8194501*10-8*height5-7,116013*10-11*height6 | 7,9559*10-2 |
| tibia 14 cortical bone cross-sectional area/tibia 4% total bone cross-sectional area | 3,57313-1,9773*10-2*height | 4024,6838-179,785227*height+ 3,3401043*height2-3,28779034*10-2 *height3+1,8073438*10-4*height4- 5,25844*10-7*height5+6,324917 *10-10*height6 | 292,70273-12,927645*height+ 0,23651817*height2-2,29294448* 10-3*height3+1,24205662*10-5* height4-3,56377566*10-8*height5+ 4,23112132*10-11*height6 |
| Strength strain indexes: | |||
| tibia 14% polar SSI | 1,6067 | 13976,5-297,96*height+2,0696*height2-4,4207*10-3*height3 | 0,1137 |
| tibia 38% polar SSI | 0,7615 | 12756,5-273,62*height+1,9209*height2-4,1356*10-3*height3 | 3,9480*10-2+5,8458*10-4*height |
| Muscle and bone: | |||
| lower leg 66% muscle cross-sectional area | 1,41545 | -203199+6199,95*height-69,814*height2+0,34635*height3-6,3268*10-4*height4 | -18,61409+0,699731*height-1,0389806*10-2*height2+7,642861*10-5*height3-2,781624*10-7*height4+4,00591 |
| *10-10*height5 | |||
| lower leg 66% total cortical bone cross-sectional area/muscle cross-sectional area | -3,8607*10-2 | 178,232-5,0993*height+5,53166*10-2*height2-2,6227*10-4*height3+4,5979 *10-7*height4 | -29,945389+1,128302*height-1,6756913*10-2*height2+1,228881*10-4*height3-4,44685*10-7*height4+ 6,34976*10-10*height5 |
SSI - strength strain index.