TABLE 1:

Descriptive statistics presented as mean±sd for the outcome variables for milk production and composition parameters in the preterm calving and full-term calving groups (N is the number of valid records for each variable in the study group from a total of 5759 records from 53 farms)

Type of calvingPreterm calvingFull-term calving
 Outcome variablesMissing recordsNMean±sdMinimumMaximumNMean±sdMinimumMaximum
Cumulative milk yield (kg)28114927342 ± 4315026 43839867527 ± 4221025 342
Average milk protein (%)28114923.21 ± 0.242.384.6239863.21 ± 0.252.114.57
Average butter fat (%)28114923.94 ± 0.611.586.6239863.99 ± 0.601.837.04
Average somatic cell score49414322.04 ± 0.540.904.0038332.02 ± 0.550.703.96