Variable;Estimate milk (kg);Standard Error;95% CI (Lower CI);95% CI (Upper CI);P-value Intercept;11584.3;341.3;10915.3;12253.3;<0.001 Year of calving;;;;; 2015;Referent;;;; 2016;130;82.7;-32;292.1;0.116 2017;19.9;80.5;-137.8;177.6;0.805 2018;-17;74.4;-162.7;128.8;0.82 2019;572.6;75.8;424.1;721.1;<0.001 2020;980.2;76.5;830.2;1130.2;<0.001 Farm;;;;; 2;Referent;;;; 1;711;45.1;622.6;799.4;<0.001 Age at first calving;-105.7;12.8;-130.8;-80.5;<0.001 Season (defined as Spring from 1st of March to 31st of May, Summer from 1st of June to 31st of August, Autumn from 1st of September to 30th of November and Winter from 1st of December to 28th of February);;;;; Spring;Referent;;;; Summer;201.9;50.9;102.3;301.6;<0.001 Autumn;844.2;47.6;750.8;937.5;<0.001 Winter;587.8;46.6;496.5;679.2;<0.001 Calving ease (defined as 0 = not observed, 1 = unassisted calving, 2 = calving assisted by 1 person, and 3 = calving assisted by more than 1 person);;;;; 0;Referent;;;; 1;240.1;67.3;108.3;372;<0.001 2;222.2;70.7;83.7;360.7;0.002 3;170.8;76.4;21.1;320.6;0.025 Stillbirth;;;;; No;Referent;;;; Yes;-256.5;82.3;-417.8;-95.2;0.002 Days in the close-up group;36.4;11;14.8;58.1;0.001 Days in the close-up group*Days in the close-up group;-0.5;0.3;-1.0;0.001;0.049