Table 3.
Association between PCV levels and CTBP infection.
| Pathogens | Status | PCV levels % dogs (n) | Average PCV (95% CI of the average) | χ2 (df) | p-value | |||
|---|---|---|---|---|---|---|---|---|
|
| ||||||||
| Normal | Mild | Moderate | Severe | |||||
| E. canis | Positive | 0.7 (1/139) | 0 (0/139) | 0 (0/139) | 0 (0/139) | NA | 0.53 (3) | 0.91* |
| Negative | 64.8 (90/139) | 25.9 (36/139) | 6.5 (9/139) | 2.2 (3/139) | 37.3 (36.1-38.5) | |||
| A. platys | Positive | 10.8 (15/139) | 5.8 (8/139) | 0.7 (1/139) | 0 (0/139) | 37.0 (34.5-39.2) | 1.52 (3) | 0.68* |
| Negative | 54.7 (76/139) | 20.1 (28/139) | 5.8 (8/139) | 2.2 (3/139) | 37.4 (36.0-37.8) | |||
| H. canis | Positive | 2.9 (4/139) | 0 (0/139) | 0 (0/139) | 0 (0/139) | 42.5 (34.1-50.9) | 2.48 (3) | 0.48* |
| Negative | 62.6 (87/139) | 25.9 (36/139) | 6.5 (9/139) | 2.2 (3/139) | 37.2 (36.0-38.4) | |||
| E. canis+ A. platys | Positive | 0 (0/139) | 0.7 (1/139) | 0.7 (1/139) | 0 (0/139) | 28.0 (0-78.8) | 7.76 (3) | 0.051* |
| Negative | 65.5 (91/139) | 25.2 (35/139) | 5.8 (8/139) | 2.2 (3/139) | 37.6 (36.1-38.9) | |||
| Overall CTBP infection | Positive | 14.4 (20/139) | 6.5 (9/139) | 1.4 (2/139) | 0 (0/139) | 37.2 (35.1-39.4) | 1.02 (3) | 0.80* |
| Negative | 51.1 (71/139) | 19.4 (27/139) | 5.0 (7/139) | 2.2 (3/139) | 37.4 (35.9-38.8) | |||
| Total (n=139) | 65.5 (91/139) | 25.9 (36/139) | 6.5 (9/139) | 2.2 (3/139) | 37.7 (36.1-38.5) | NA | ||
*
Chi-squared test; χ2=Chi-square, df=Degree of freedom, NA=Not available, CTBP=Canine tick-borne pathogen, PCR=Polymerase chain reaction, E. canis=Ehrlichia canis, A. platys=Anaplasma platys, H. canis=Hepatozoon canis, PCV=Packed cell volume, CI=Confidence interval