Table 1 Factors explaining the variation in volume of the uropygial gland in house sparrows. Scaled body mass index, haemosporidian infection, sex, locality and the two-way interactions between sex and scaled body mass index, between infection status and scaled body mass index and between infection and locality were included in the analysis as predictor variables. Sample size was 222 individuals
Independent variable | Square-sum III | DF | F | P |
|---|---|---|---|---|
Scaled body mass index | 4695.89 | 1 | 0.190 | 0.7176 |
Infection | 3787.71 | 1 | 4.082 | 0.046 |
Sex | 5574.75 | 1 | 4.122 | 0.036 |
Locality | 14282.25 | 1 | 10.464 | <Â 0.001 |
Sex × Scaled body mass | 5061.31 | 1 | 4.084 | 0.045 |
Infection × Scaled body mass | 4695.89 | 1 | 4.354 | 0.027 |
Infection × Locality | 1153.53 | 1 | 0.845 | 0.359 |