Figure 12.

Forest plot of the correlation coefficient of rumen status (pH and temperature) between wearable sensors and visual observation. (A,B) show Pearson’s correlation coefficient and concordance correlation coefficient of rumen pH, respectively. (C) shows the Pearson’s correlation coefficient of rumen temperature. Numbers in parentheses indicate individual studies applying different evaluation conditions within the same article. ‘Total’ means the sample size of each study and ‘Weight’ means the weight for the mean based on the sample size.