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Table 2 Statistical details derived from mean crack length and substrate density plots of Fig. 6, at frequencies 1, 10 and 50 Hz. A and D are the constants from the curve fits. R2, the squared correlation coefficient indicates the extent of the data and regression line fit. A P-value less than 0.05 confirms statistically significant data, as displayed at 10 Hz of loading frequency

From: Surface damage of bovine articular cartilage-off-bone: the effect of variations in underlying substrate and frequency

Frequency (Hz) Total crack length linear fit details
A D R2 P
1 (−)2.652 3.454 0.485 0.304
10 (+)13.077 2.124 0.909 0.047
50 (−)2.999 5.612 0.524 0.276