Table 2: Rounding analysis summary statistics for the chemical universe considered.

 

RfDo

RfCi

Number of chemicals with a rounded toxicity factor

124

 (50.6% of universe)

40

 (87% of universe)

% of ‘rounded up’ toxicity factors 

58.1

55.0

% of ‘rounded down’ toxicity factors

41.9

45.0

 

Magnitude range of ‘rounded up’ toxicity factors

0.55% - 33.3%

2.04% - 25.0%

Arithmetic mean of the degree of toxicity factor rounding (absolute values considered)

13.3%

12.1%

 

Magnitude range of ‘rounded down’ toxicity factors

3.61% - 30.07%

3.03% - 31.03%

Arithmetic mean of the degree of toxicity factor rounding (absolute values considered)

11.4%

11.7%