Dosage: Pedigree & Performance
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Dosage Statistics (1983-2011)

The following table provides basic Dosage data for open stakes winners between 1983 and 2011. The data are presented by racing categories of surface, distance, age, sex and class of race. Each category includes the number of races in the sample, the average distance of the races in the category, the average number of points in each of the five aptitude groups (B=Brilliant, I=Intermediate, C=Classic, S=Solid, P=Professional in order from left to right) that comprise the Dosage Profile (DP), the average Dosage Index (ADI), the average Center of Distribution (ACD), the composite Dosage Index (CDI) and the composite Center of Distribution (CCD). Composite Dosage figures are calculated in the usual way by using the average points in each aptitude group. The CDI and CCD reflect the population as a whole rather than the average of each of the individuals in the population.

CATEGORY RACES    AWD       DP      PTS     ADI     ACD     CDI     CCD
ALL 26750    8.10    7.40 - 4.41 - 9.74 - 1.38 - 0.79     23.72    3.21    0.71    2.37    0.69
AWS 834 7.83 5.62 - 3.56 - 9.35 - 0.69 - 0.36 19.59    2.76    0.68    2.42    0.68
DIRT 17530 7.76 7.76 - 4.61 - 9.16 - 1.21 - 0.69 23.43    3.55 0.77    2.62    0.75
TURF 8386 8.82 6.84 - 4.08 - 10.98 - 1.82 - 1.02 24.73    2.55    0.58    1.97    0.56
<8F 8381 6.27 7.92 - 4.46 - 8.36 - 1.01 - 0.50 22.24    3.98    0.84    2.91    0.82
8 TO 10F 16887 8.68 7.23 - 4.42 - 10.26 - 1.47 - 0.86 24.25 2.93 0.66 2.25    0.65
>10F 1482 11.78 6.51 - 3.96 - 11.53 - 2.46 - 1.54 26.00 2.10 0.45 1.66    0.44
2YO 3483 7.22 7.52 - 4.33 - 8.87 - 1.10 - 0.56 22.38 3.62 0.78 2.67    0.77
3YO 7858 8.16 7.40 - 4.43 - 9.79 - 1.31 - 0.72 23.65 3.20 0.72 2.42    0.70
OLDER 15409 8.26 7.38 - 4.42 - 9.90 - 1.49 - 0.87 24.06 3.12 0.68 2.29    0.66
MALE 15515 8.21 7.40 - 4.45 - 9.77 - 1.36 - 0.81 23.79 3.22 0.71 2.37    0.68
FEMALE 11235 7.94 7.41 - 4.36 - 9.69 - 1.41 - 0.75 23.62 3.21 0.71 2.37    0.69
G1 3144 9.07 7.66 - 4.54 - 11.24 - 1.59 - 1.00 26.03 2.79 0.64 2.17    0.63
G2 4341 8.56 7.42 - 4.32 - 10.53 - 1.47 - 0.85 24.59 2.95 0.66 2.24    0.65
G3 6528 8.24 7.38 - 4.35 - 10.09 - 1.38 - 0.78 23.98 3.07 0.70 2.33    0.67
UNGRADED 12737 7.62 7.35 - 4.44 - 8.91 - 1.31 - 0.71 22.72 3.48 0.74 2.51    0.72
BY DISTANCE:
  5.50F 519 5.50 7.45 - 4.16 - 8.25 - 1.10 - 0.47 21.42 4.02 0.81 2.76    0.81
  6.00F 3977 6.00 8.03 - 4.53 - 8.09 - 0.94 - 0.44 22.04 4.26 0.87 3.06    0.87
  6.50F 1093 6.50 7.59 - 4.12 - 8.12 - 1.10 - 0.52 21.44 3.75 0.82 2.78    0.82
  7.00F 2206 7.00 8.17 - 4.71 - 8.98 - 1.07 - 0.60 23.51 3.73 0.82 2.82    0.82
  8.00F 3350 8.00 7.29 - 4.28 - 10.16 - 1.44 - 0.74 23.92 2.98 0.68 2.30    0.69
  8.32F 380 8.32 7.49 - 4.45 - 8.69 - 1.27 - 0.97 22.86 3.29 0.73 2.47    0.73
  8.50F 6328 8.50 7.27 - 4.45 - 9.98 - 1.39 - 0.79 23.89 3.05 0.69 2.33    0.69
  9.00F 5314 9.00 7.14 - 4.47 - 10.44 - 1.51 - 0.89 24.46 2.86 0.65 2.21    0.65
  9.50F 351 9.50 7.04 - 4.37 - 10.75 - 1.93 - 1.19 25.28 2.52 0.57 1.98    0.57
10.00F 1155 10.00 7.20 - 4.47 - 11.60 - 1.79 - 1.30 26.37 2.50 0.56 1.96    0.57
11.00F 564 11.00 6.66 - 3.98 - 11.64 - 2.49 - 1.44 26.21 2.10 0.47 1.69    0.47
12.00F 778 12.00 6.35 - 3.90 - 11.52 - 2.50 - 1.54 25.81 2.02 0.43 1.63    0.43

The charts below show the relationship between average DI and average distance, and between average CD and average distance for the data points in the above table.  The red line is the result of a linear regression analysis.  The R-squared values, both at 0.9 or greater, represent an outstanding correlation of the data and confirm the linear relationship between Dosage figures and distance.

ADI vs Dist (2012)

ACD vs Dist (2102)