Dosage: Pedigree & Performance
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Dosage Statistics (1983-2009)

The following table provides basic Dosage data for open stakes winners between 1983 and 2009. 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 25131     8.10     7.51 - 4.45 - 9.73 - 1.42 - 0.81      23.93     3.25     0.71     2.37     0.69
DIRT 16783 7.76 7.83 - 4.63 - 9.15 - 1.24 - 0.71 23.56 3.58 0.77 2.61 0.75
SYNTHETIC 537 7.84 5.85 - 3.58 - 9.51 - 0.70 - 0.40 20.04 2.77 0.69 2.42 0.69
TURF 7811 8.84 6.93 - 4.14 - 11.01 - 1.85 - 1.06 24.99 2.57 0.58 1.97 0.56
<8F 7865   6.28   8.06 - 4.54 - 8.37 - 1.04 - 0.51   22.52   4.04   0.84   2.93   0.83
8 TO 10F 15880   8.68   7.32 - 4.45 - 10.26 - 1.51 - 0.89   24.43   2.95   0.67   2.24   0.65
>10F 1386   11.77   6.60 - 4.03 - 11.44 - 2.50 - 1.59   26.17   2.12   0.46   1.67   0.44
2YO 3273 7.22 7.67 - 4.39 - 8.90 - 1.12 - 0.58 22.66 3.67 0.79 2.68 0.77
3YO 7383 8.16 7.51 - 4.46 - 9.79 - 1.34 - 0.75 23.87 3.23 0.72 2.41 0.70
OLDER 14475 8.27 7.47 - 4.46 - 9.89 - 1.52 - 0.89 24.25 3.16 0.69 2.29 0.66
MALE 14597   8.21   7.50 - 4.50 - 9.77 - 1.40 - 0.84   24.00   3.25   0.71   2.37   0.68
FEMALE 10534   7.94   7.53 - 4.39 - 9.69 - 1.44 - 0.78   23.82   3.24   0.71   2.37   0.69
G1 2908 9.10 7.81 - 4.61 - 11.28 - 1.63 - 1.04 26.37 2.82 0.64 2.17 0.63
G2 4032 8.57 7.55 - 4.35 - 10.56 - 1.50 - 0.89 24.85 2.98 0.67 2.24 0.65
G3 6103 8.24 7.48 - 4.40 - 10.07 - 1.41 - 0.80 24.16 3.11 0.70 2.33 0.68
UNGRADED 12088 7.63 7.44 - 4.48 - 8.92 - 1.34 - 0.73 22.91 3.51 0.75 2.51 0.72
BY DISTANCE:                                              
  5.50F 476   5.50   7.68 - 4.32 - 8.30 - 1.16 - 0.50   21.96   4.12   0.82   2.78   0.80
  6.00F 3745   6.00   8.18 - 4.60 - 8.10 - 0.97 - 0.45   22.30   4.33   0.87   3.08   0.86
  6.50F 1030   6.50   7.68 - 4.17 - 8.06 - 1.12 - 0.54   21.57   3.80   0.82   2.79   0.80
  7.00F 2072   7.00   8.34 - 4.80 - 9.03 - 1.10 - 0.62   23.88   3.79   0.82   2.83   0.80
  8.00F 3079   8.00   7.47 - 4.35 - 10.23 - 1.48 - 0.77   24.29   3.03   0.69   2.30   0.67
  8.32F 347   8.32   7.57 - 4.39 - 8.55 - 1.35 - 1.01   22.87   3.32   0.73   2.45   0.71
  8.50F 5981   8.50   7.34 - 4.46 - 9.95 - 1.42 - 0.82   24.00   3.06   0.69   2.33   0.67
  9.00F 5042   9.00   7.20 - 4.50 - 10.46 - 1.55 - 0.92   24.62   2.87   0.64   2.20   0.63
  9.50F 335   9.50   7.09 - 4.40 - 10.77 - 1.96 - 1.21   25.43   2.52   0.57   1.97   0.56
10.00F 1091   10.00   7.29 - 4.51 - 11.55 - 1.81 - 1.34   26.49   2.52   0.57   1.97   0.55
11.00F 535   11.00   6.73 - 4.01 - 11.58 - 2.50 - 1.48   26.31   2.12   0.48   1.69   0.46
12.00F 720   12.00   6.45 - 4.00 - 11.44 - 2.55 - 1.61   26.05   2.05   0.43   1.64   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.

The next table displays the median Dosage figures (median Dosage Index (MDI); median Center of Distribution (MCD)) for the same racing categories shown above, followed by median DI vs distance and median CD vs distance charts.  The trends are similar to those for the average figures in the previous table.

CATEGORY RACES     M DIST              MDP              M PTS     MDI     MCD
ALL 25131   8.50   7 - 4 - 9 - 0 - 0   24.00   2.60   0.75
DIRT 16783 8.00 7 - 4 - 8 - 0 - 0 22.00 3.00 0.80
SYNTHETIC 537 8.00 6 - 3 - 9 - 0 - 0 20.00 2.60 0.70
TURF 7811 8.50 6 - 4 - 10 - 1 - 0 24.00 2.11 0.61
<8F 7865   6.00   7 - 4 - 8 - 0 - 0   22.00   3.00   0.86
8 TO 10F 15880   8.50   7 - 4 - 9 - 1 - 0   24.00   2.43   0.70
>10F 1386   12.00   6 - 3 - 11 - 2 - 0   26.00   1.80   0.50
2YO 3273 7.00 7 - 4 - 8 - 0 - 0 22.00 3.00 0.81
3YO 7383 8.50 7 - 4 - 9 - 0 - 0 24.00 2.64 0.75
OLDER 14475 8.50 7 - 4 - 9 - 0 - 0 24.00 2.53 0.72
MALE 14597   8.50   7 - 4 - 9 - 0 - 0   24.00   2.60   0.75
FEMALE 10534   8.50   7 - 4 - 9 - 0 - 0   22.00   2.58   0.75
G1 2908 9.00 7 - 4 - 10 - 1 - 0 26.00 2.36 0.69
G2 4032 8.50 7 - 4 - 10 - 0 - 0 24.00 2.47 0.71
G3 6103 8.50 7 - 4 - 9 - 0 - 0 24.00 2.56 0.73
UNGRADED 12088 8.00 7 - 4 - 8 - 0 - 0 22.00 2.71 0.77
BY DISTANCE:                                      
  5.50F 476   5.50   7 - 4 - 8 - 0 - 0   20.00   3.00   0.80
  6.00F 3745   6.00   8 - 4 - 7 - 0 - 0   22.00   3.33   0.89
  6.50F 1030   6.50   7 - 4 - 7.5 - 0 - 0   20.00   3.00   0.84
  7.00F 2072   7.00   8 - 4 - 8 - 0 - 0   22.00   3.00   0.85
  8.00F 3079   8.00   7 - 4 - 9 - 0 - 0   24.00   2.47   0.72
  8.32F 347   8.32   7 - 4 - 8 - 0 - 0   22.00   2.60   0.75
  8.50F 5981   8.50   7 - 4 - 9 - 0 - 0   24.00   2.53   0.72
  9.00F 5042   9.00   7 - 4 - 10 - 1 - 0   24.00   2.38   0.69
  9.50F 335   9.50   7 - 4 - 10 - 1 - 0   24.00   2.13   0.61
10.00F 1091   10.00   7 - 4 - 10 - 1 - 0   26.00   2.16   0.62
11.00F 535   11.00   6 - 3 - 11 - 1 - 0   26.00   1.86   0.50
12.00F 720   12.00   6 - 3 - 11 - 2 - 0   26.00   1.73   0.47