Table 3.

Associations between total, plant and animal protein intake with total and spine BMD ^a

			All			Males			Females
Exposure	BMD (g/cm2)	Model	B	SE	P value	B	SE	P value	B	SE	P value
Total protein, g/d	Total body	1	0.0024	0.0002	<0.001	0.0009	0.0002	<0.001	0.0009	0.0002	<0.001
	F: n = 843	2	0.0008	0.0002	<0.001	0.0009	0.0002	<0.001	0.0008	0.0002	<0.001
	M: n = 649	3	0.0011	0.0002	<0.001	0.0009	0.0004	0.013	0.0014	0.0003	<0.001
	Spine	1	0.0025	0.0003	<0.001	0.0010	0.0004	0.013	0.0012	0.0003	0.001
	F: n = 743	2	0.0010	0.0003	<0.001	0.0010	0.0004	0.013	0.0012	0.0004	0.001
	M: n = 549	3	0.0015	0.0004	<0.001	0.0012	0.0006	0.062	0.0022	0.0005	<0.001
Plant protein, g/d	Total body	1	0.0032	0.0004	<0.001	0.0003	0.0004	0.52	−0.0002	0.0005	0.73
	F: n = 843	2	−0.0002	0.0004	0.582	0.00002	0.0005	0.97	−0.0004	0.0005	0.50
	M: n = 649	3	−0.0010	0.0005	0.026	−0.0013	0.0007	0.047	−0.0009	0.0007	0.18
	Spine	1	0.0026	0.0006	<0.001	−0.0003	0.0008	0.68	−0.0010	0.0007	0.16
	F: n = 743	2	−0.0006	0.0006	0.319	−0.0005	0.0009	0.59	−0.0007	0.0008	0.38
	M: n = 549	3	−0.0019	0.0008	0.013	−0.0024	0.0012	0.037	−0.0016	0.0010	0.10
Animal protein, g/d	Total body	1	0.0025	0.0002	<0.001	0.0012	0.0003	<0.001	0.0013	0.0003	<0.001
	F: n = 843	2	0.0012	0.0002	<0.001	0.0012	0.0003	<0.001	0.0012	0.0003	<0.001
	M: n = 649	3	0.0011	0.0002	<0.001	0.0011	0.0003	0.001	0.0014	0.0003	<0.001
	Spine	1	0.0029	0.0003	<0.001	0.0015	0.0005	0.001	0.0019	0.0004	<0.001
	F: n = 743	2	0.0016	0.0003	<0.001	0.0016	0.0005	0.001	0.0018	0.0004	<0.001
	M: n = 549	3	0.0017	0.0004	<0.001	0.0017	0.0006	0.005	0.0022	0.0005	<0.001

^a Model 1: crude association. Model 2: adjusted for age, sex, physical activity level, smoking status and alcohol intake. Model 3: additionally adjusted for calcium intake, vitamin D intake and energy intake. Presented numbers of participants are based on Model 3.