Linear and exponential regression provided reasonable correlation coefficients of higher than 0.74 and 0.85, respectively.
A direct comparison of 5178 ensembl genes with measured expression in both the DRS and microarray datasets revealed a reasonable correlation (Pearson correlation coefficient, R=0.68) between these two samples (see supplementary material Fig. S2 and methods in the supplementary material).
After admission to the ICU, COPAC versus COWave and COPAC versus COTranspulm showed a reasonable correlation, with correlation coefficients of 0.69 (p < 0.01) and 0.68 (p < 0.01), respectively.
For the type specific β-turn predictions, only type I and II can be predicted with reasonable Matthews correlation coefficients, where we obtain performance values of 0.36 and 0.31, respectively.
Relative validity of our FFQ for phylloquinone intake was low, but for menaquinones intake it was reasonable with correlation coefficients well in line with those of many other nutrients estimated using FFQs (16).
The test-retest reliability was performed on the first version of the VAS-IBS, and a reasonable intra-class correlation coefficient value is according to Streiner and Norman [ 15] about 0.70.
A validation study of the food frequency questionnaires in the NHS indicated that nut intake was reported with reasonable accuracy; the correlation coefficient was 0.75 between nut intakes assessed by the 1980 questionnaire and by dietary records collected over 4 weeks (Salvini et al, 1989).
In the elderly they found that although there is a reasonable reliability (median correlation coefficient 0.60-0.65 in existing questionnaires and 0.70 in the newer questionnaires) the validity was 'poor to acceptable' in the elderly (0.35-0.40 in existing and 0.41 in new questionnaires).
Correlation between both methods was reasonable, but not perfect (correlation coefficient r = 0.6930, P < 0.0001).
We considered a reasonable association to be a correlation coefficient of 0.3 or over, as most criterion related validity co-efficients tend to be small.
