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. Author manuscript; available in PMC: 2015 Jun 1.
Published in final edited form as: Prev Vet Med. 2014 Feb 19;114(0):213–222. doi: 10.1016/j.prevetmed.2014.02.006

Table 4.

Intraclass correlation coefficients, slope of the regression line comparing self-reported measures and bin measures, and bias, variability of the bias and limits of agreement for bin measures and self-reported measures in a sample of 20 farmers asked to collect discarded drug packaging and recall antibiotic usage in Cajamarca, Peru

ICC 95% CI of the ICC Slope of regression line (bin measure vs. SR measure) P-value indicating a significant difference from 1 for the slope Mean biasa SD LL and ULb of agreement
Last month Bottles 0.30 0.00–0.63 0.99 0.99 −0.3 2.15 −4.51; 3.91
Volume (mLs) 0.40 0.11–0.69 0.54 0.11 8 313 −605; 621
IMM infusions 0.59 0.370–0.80 0.42 <0.001 −5.2 7.61 −20.1; 9.72
Six months Bottles 0.01 0.00–0.46 0.01 <0.001 3.2 10.0 −16.4; 22.8
Volume (mLs) 0.30 0.00–0.63 0.26 0.001 536 1520 −2443; 3515
IMM infusions 0.51 0.27–0.76 0.30 0.001 −24.4 49.8 −122; 73.2
a

The mean bias represents the difference between bin measures and self-report measures

b

The LL and UL represent the mean bias-1.96*SD and the mean bias+1.96*SD, respectively.

IMM=Intra-mammary, CI=confidence interval, ICC=Intraclass correlation coefficient, SD=standard deviation, LL=lower limit, UL=upper limit