Table 3.
Models selected for describing the effects of heart rate variables based on AICc for results obtained in an “introduction experiment” and a “separation experiment” with goats.
| Outcome variable | Selected modelsa | wib | ER0c |
|---|---|---|---|
| Introduction experiment | |||
| Heart rate (beats/minute) | Day | 0.41 | 10.3 |
| RMSSD (ms) | Day | 0.20 | 5.0 |
| SDNN (ms) | Day | 0.28 | 140.0 |
| RMSSD/SDNN | Intercept | 0.16 | 1.0 |
| Separation experiment | |||
| Heart rate (beats/minute) | Treatment | 0.19 | 3.8 |
| RMSSD (ms) | Intercept | 0.42 | 1.0 |
| SDNN (ms) | Intercept | 0.34 | 1.0 |
| RMSSD/SDNN | Intercept | 0.46 | 1.0 |
RMSSD, root mean square of successive differences of interbeat intervals, milliseconds; SDNN, SD of all interbeat intervals, milliseconds; RMSSD/SDNN, ratio between RMSSD and SDNN.
aFixed effects included in the model chosen by Akaike’s information criterion (AICc).
bwi = Akaike weight, which can be interpreted as the probability of the given model within the set.
cER0 = Evidence ratio between the chosen model and the null model (including only the intercept).