Table 2.
The relationship between call duration and the investigated (fixed) variables in the introduction, build-up, climax, let-down, and entire pant hoot
| Introduction | ||||
| Independent variable | Estimate ± SE | χ 2 | p value | 95% confidence interval |
| Number of calls | −0.45±0.04 | 19.56 | <0.001 | −0.52 to − 0.35 |
| Context | 0.25±0.08 | 7.03 | 0.008 | 0.08 to 0.41 |
| Build-up | ||||
| Independent variable | Estimate ± SE | χ 2 | p value | 95% confidence interval |
| Number of calls | −0.15±0.06 | 4.41 | 0.036 | −0.32 to − 0.01 |
| Context | −0.03±0.18 | 0.03 | 0.857 | −0.47 to 0.37 |
| Climax | ||||
| Independent variable | Estimate ± SE | χ 2 | p value | 95% confidence interval |
| Number of calls | −0.32±0.07 | 12.54 | <0.001 | −0.49 to − 0.14 |
| Context | 0.35±0.11 | 5.99 | 0.014 | 0.09 to 0.57 |
| Let-down | ||||
| Independent variable | Estimate ± SE | χ 2 | p value | 95% confidence interval |
| Number of calls | −0.14±0.06 | 10.94 | <0.001 | −0.37 to − 0.11 |
| Context | 0.17±0.15 | 1.11 | 0.291 | −0.14 to 0.55 |
| Entire pant hoot | ||||
| Independent variable | Estimate ± SE | χ 2 | p value | 95% confidence interval |
| Number of calls | −0.25±0.03 | 23.16 | <0.001 | −0.31 to − 0.19 |
| Context | 0.09±0.06 | 1.55 | 0.213 | −0.06 to 0.20 |
Test variables are in bold. (LMM; dependent variable: call duration; random intercepts: pant hoot ID and caller ID)