From: Factors affecting reproductive performance in the Swedish Bernese mountain dog
Outcome | |||||||||
---|---|---|---|---|---|---|---|---|---|
Stillbirth | Mortality of live-born puppies | ||||||||
Factor | Factor level | Proportion % (n at factor level) | OR (95% CI) | P-value | Proportion % (n at factor level) | OR (95% CI) | P-value | ||
Age of bitch | Age 1–2 | 57.0 (242) | Reference | 0.81a | 15.7 (242) | Reference | 0.87a | ||
Age 3 | 51.5 (237) | 0.78 (0.51–1.20) | – | 17.3 (237) | 1.05 ( 0.59–1.85) | – | |||
Age 4 | 48.8 (168) | 0.76 (0.45–1.28) | – | 17.9 (168) | 1.28 (0.63–2.59) | – | |||
Age 5 | 48.0 (100) | 0.73 (0.36–1.45) | – | 13.0 (100) | 0.93 ( 0.36–2.40) | – | |||
Age ≥ 6 | 43.1 (51) | 0.77 (0.30–1.94) | – | 11.8 (51) | 0.73 (0.19–2.85) | – | |||
Parity | Parity1 | 53.1 (426) | Reference | 0.83a | 16.2 (426) | Reference | 0.48a | ||
Parity 2 | 52.5 (236) | 1.16 (0.76–1.79) | – | 18.6 (236) | 1.16 (0.66–2.04) | – | |||
Parity 3 | 46.9 (98) | 0.97 (0.50–1.84) | – | 10.2 (98) | 0.61 (0.24–1.56) | – | |||
Parity ≥ 4 | 42.1 (38) | 0.91 (0.34–2.47) | – | 13.2 (38) | 1.00 (0.24–4.18) | – | |||
Season | Winter | 48.9 (174) | Reference | 0.052a | 9.2 (174) | Reference | Reference | ||
Spring | 55.3 (291) | 1.26 (0.83–1.92) | – | 16.8 (291) | 2.06 (1.09–3.91) | 0.026 | |||
Summer | 56.2 (178) | 1.41 (0.88–2.24) | – | 20.2 (178) | 2.72 (1.37–5.40) | 0.0041 | |||
Autumn | 42.6 (155) | 0.76 (0.47–1.24) | – | 17.4 (155) | 2.15 (1.06–4.37) | 0.034 | |||
LSB | LSB 1–2 | 35.5 (107) | Reference | Reference | 9.3 (107) | Reference | Reference | ||
LSB 3–4 | 39.9 (163) | 1.19 (0.69–2.06) | 0.52 | 11.7 (163) | 1.41 (0.59–3.34) | 0.44 | |||
LSB 5–7 | 49.0 (257) | 1.75 (1.05–2.90) | 0.031 | 21.9 (257) | 3.25 (1.46–7.20) | 0.0037 | |||
LSB 8–9 | 66.3 (172) | 3.62 (2.07–6.33) | < 0.001 | 13.4 (172) | 1.83 (0.76–4.42) | 0.18 | |||
LSB ≥ 10 | 69.7 (99) | 4.28 (2.62–8.10) | < 0.001 | 20.2 (99) | 3.00 (1.21–7.45) | 0.018 | |||
CS | CS | 49.4 (263) | 0.96 (0.68–1.34) | 0.82 | 18.6 (263) | 1.49 (0.95–2.33) | 0.082 | ||
Stillbirth | Stillbirth | – | – | – | 15.5 (412) | 0.80 (0.52–1.24) | 0.32 |