Table 2 Settlement curves and time trends of post-larvae production in the treatments Posidonia, Cocconeis and VOC along with their controls analysed by means of Kaplan-Meier method.
From: Inducers of settlement and metamorphosis of the shrimp Hippolyte inermis Leach in Posidonia oceanica
Posidonia vs. Control | Cocconeis vs. Control | VOCs vs. Control | |||
|---|---|---|---|---|---|
Log-rank (Mantel-Cox) test | Log-rank (Mantel-Cox) test | Log-rank (Mantel-Cox) test | |||
Chi square | 13,29 | Chi square | 2,56 | Chi square | 7,082 |
df | 1 | df | 1 | df | 1 |
P value | 0,0003 | P value | 0,1096 | P value | 0,0078 |
P value summary | *** | P value summary | ns | P value summary | ** |
Are the survival curves sig different? | Yes | Are the survival curves sig different? | No | Are the survival curves sig different? | Yes |
Gehan-Breslow-Wilcoxon test | Gehan-Breslow-Wilcoxon test | Gehan-Breslow-Wilcoxon test | |||
Chi square | 15,27 | Chi square | 2,77 | Chi square | 4,866 |
df | 1 | df | 1 | df | 1 |
P value | <0,0001 | P value | 0,0961 | P value | 0,0274 |
P value summary | **** | P value summary | ns | P value summary | * |
Are the survival curves sig different? | Yes | Are the survival curves sig different? | No | Are the survival curves sig different? | Yes |
Hazard Ratio (logrank) | A/B | Hazard Ratio (logrank) | A/B | Hazard Ratio (logrank) | A/B |
Ratio (and its reciprocal) | 0,6412 | Ratio (and its reciprocal) | 0,8356 | Ratio (and its reciprocal) | 0,5927 |
95% CI of ratio | 0,4848 to 0,8480 | 95% CI of ratio | 0,6445 to 1,083 | 95% CI of ratio | 0,3539 to 0,9926 |
