Table 3 Determinants of low and very low birth weight
Parameters | NBW vs VLBW [NBW as Reference] | LBW vs VLBW [VLBW as Reference] | NBW vs LBW [NBW as Reference] | |||
|---|---|---|---|---|---|---|
P-value | Odds ratio (95%CI) | P-value | Odds ratio (95%CI) | P-value | Odds ratio (95%CI) | |
Dam age at whelping (years) [2–4 years as Reference] | 0.081 | 0.536 | – | |||
min-2 | 0.54 (0.18–1.33) | 1.74 (0.7–5.12) | ||||
4–6 | 0.99 (0.56–1.74) | 1.23 (0.69–2.23) | ||||
6-max | 1.65 (0.88–3.06) | 1.24 (0.62–2.58) | ||||
Breed [German Shepherd as Reference] | < 0.001 | < 0.001 | < 0.001 | |||
Australian Shepherd | 0.98 (0.33–3.26) | 2.53 (0.73–7.8) | 1.93 (1.23–3.03) | |||
Bichon Frise | 8.27 (2.91–28.01) | 0.11 (0.03–0.37) | 0.92 (0.44–1.88) | |||
Maltese | 2.63 (0.83–9.35) | 0.92 (0.23–3.42) | 1.48 (0.82–2.66) | |||
Cocker Spaniel | 1 (0.33–3.37) | 2.12 (0.6–6.71) | 1.85 (1.17–2.93) | |||
Golden Retriever | 0.44 (0.11–1.68) | 6.17 (1.54–25.29) | 2.42 (1.55–3.79) | |||
Labrador Retriever | 0.33 (0.13–1.05) | 5.01 (1.54–13.96) | 1.4 (0.94–2.08) | |||
Rottweiler | 4.12 (1.35–14.27) | 0.31 (0.08–1.02) | 1.05 (0.56–1.99) | |||
Shih Tzu | 0.9 (0.17–3.91) | 4.52 (1–23.91) | 3.36 (1.94–5.88) | |||
West Highland White Terrier | 0.47 (0.07–2.22) | 3.73 (0.7–27.73) | 1.12 (0.64–1.98) | |||
Litter size | – | < 0.001 | 14.47 (4.43–48.36) | < 0.001 | 8.11 (5.29–12.5) | |
Gender [Female as Reference] | 0.063 | – | < 0.001 | |||
Male | 0.65 (0.41–1.02) | 0.69 (0.59–0.81) | ||||
Stillbirth in the litter [Absence as Reference] | – | – | 0.47 | |||
Presence | 1.07 (0.9–1.27) | |||||