Table 4.

Summary of the linear regression for stearic acid (C18:0) in milk in g/100 g fat without random effects, observations: n = 2,432

C18:0	Mean (SD)	Coefficient (95% CI, P-value)
Cowtype
Healthy (= ref)	0.8 (0.8)	—
Clever	−0.5 (0.7)	−1.25 (−1.32 to −1.17, P < 0.001)
Athletic	1.5 (1.0)	0.70 (0.57 to 0.83, P < 0.001)
Hypket.	−0.2 (0.7)	−0.94 (−1.11 to −0.77, P < 0.001)
PMAS	1.4 (0.9)	0.58 (0.41 to 0.76, P < 0.001)
Parity
Multip. (= ref)	−0.1 (1.0)	—
Healthy × Multip. (= ref)		—
Clever × Multip.		−1.01 (−1.17 to −1.03, P < 0.001)
Athletic × Multip.		0.61 (0.47 to.75, P < 0.001)
Hypket. × Multip.		−0.86 (−1.02 to −0.70, P < 0.001)
PMAS × Multip.		0.23 (0.06 to 0.39, P < 0.007)
Primip.	0.3 (1.0)	0.43 (0.34 to 0.53, P < 0.001)
Healthy × Primip. (= ref)		—
Clever × Primip.		−1.14 (−1.27 to −1.02, P < 0.001)
Athletic × Primip.		0.13 (−0.13 to 0.38, P < 0.341)
hypket. × Primip.		−0.74 (−1.30 to −0.19, P < 0.009)
PMAS × Primip.		0.40 (0.10 to 0.70, P < 0.009)
Week
1 (= ref)	0.4 (1.1)	—
2	0.6 (1.0)	0.18 (−0.01 to 0.38, P < 0.068)
3	0.3 (1.0)	−0.15 (−0.34 to 0.04, P < 0.120)
4	0.0 (0.9)	−0.41 (−0.60 to −0.22, P < 0.001)
5	−0.1 (1.0)	−0.53 (−0.72 to −0.34, P < 0.001)
6	−0.3 (0.9)	−0.74 (−0.93 to −0.55, P < 0.001)
7	−0.4 (0.8)	−0.80 (−0.99 to −0.61, P < 0.001)
8	−0.5 (0.8)	−0.92 (−1.25 to −0.59, P < 0.001)
log(milk yield) [−11.3,3.0]	−0.0 (1.0)	−0.17 (−0.21 to −0.13, P < 0.001)
Healthy × log(milk yield) (= ref)		—
Clever × log(milk yield)		0.01 (−0.03 to 0.05, P < 0.590)
Athletic × log(milk yield)		−0.19 (−0.29 to −0.08, P < 0.001)
Hypket. × log(milk yield)		−0.04 (−0.23 to 0.15, P < 0.678)
PMAS × log(milk yield)		−0.07 (−0.22 to 0.08, P < 0.363)
Multip. × log(milk yield) (= ref)		—
Primip. × log(milk yield)		−0.07 (−0.16 to 0.02, P < 0.151)

ref, reference; hypket., hyperketonemic; PMAS, poor metabolic adaptation syndrome; primip., primiparous; multip., multiparous.