From: A survey of dystocia in the Boxer breed
Age of bitch (years)
Whelpings with uterine inertia (no.)
Frequency distribution among all the whelpings (%)
Frequency distribution among the dystocias (%)
2
4
7.7
50.0
3
8
11.1
57.1
13
26.0
76.5
5
9
23.1
69.2
6
22.0
46.2
7
20.0
40.0