Table 1. Coefficients showing the influence of age, BMI and sex on WBCs.

Variables	Coefficient	Standard error	Z statistic	Probability
Males
Intercept	6.885	0.166	41.57	<0.001
Age	−0.101	0.009	−11.73	<0.001
BMI	−0.041	0.009	−4.77	<0.001
Females
Intercept	6.965	0.046	151.19	<0.001
Age	−0.191	0.008	−25.06	<0.001
BMI	−0.119	0.009	−13.40	<0.001
Age:BMI	−0.058	0.009	−6.16	<0.001
Males & Females combined
Intercept	6.978	0.121	57.73	<0.001
Age	−0.177	0.007	−25.18	<0.001
BMI	−0.093	0.007	−13.22	<0.001
Sex	−0.099	0.171	−0.58	0.561
Age:BMI	−0.043	0.007	−6.22	<0.001
Age:Sex	0.076	0.013	6.02	<0.001
BMI:Sex	0.034	0.015	2.26	0.024
Age:BMI:Sex	0.051	0.016	3.28	0.001