Table 2.

Univariable Logistic Regression for Low aBMD-Z (<−2) at First and Second DXA Scans

	First DXA (n = 673)			Second DXA (n = 108)
	n	Unadjusted OR (95% CI)	P value	n	Unadjusted OR (95% CI)	P value
Male (reference: female)	673	0.90 (0.48–1.69)	.75	108	1.15 (0.30–4.34)	.8
Age, y	673	1.02 (0.94–1.10)	.67	108	1.15 (0.95–1.39)	.2
BMI-Z at first DXA	669	0.46 (0.35–0.60)	<.001a	108	0.83 (0.44–1.56)	.6
BMI-Z at second DXA				106	0.85 (0.39–1.85)	.7
Time from diagnosis (or prior DXA), d	673	1.00 (0.99–1.00)	.7	108	1.00 (1.00–1.00)	.4
Vitamin D, ng/mL	559	1.02 (1.00–1.05)	.1	97	1.00 (0.96–1.06)	.9
Albumin, g/dL	505	0.70 (0.30–1.63)	.4	96	9.14 (0.54–153.9)	.1
Alkaline phosphatase, U/L	505	1.00 (1.00–1.00)	.2	96	1.00 (1.00–1.01)	.3
Hemoglobin, g/dL	516	1.10 (0.79–1.54)	.6	98	1.05 (0.53–2.08)	.9
Calcium, mg/dL	507	1.14 (0.46–2.78)	.8	97	1.99 (0.27–14.8)	.5
Phosphorus, mg/dL	43	0.87 (0.30–2.49)	.8	7	1.62 (0.22–11.7)	.6
tTG, U	460	1.01 (1.00–1.02)	.06	52	1.01 (1.00–1.03)	.1
tTG IgA, U/mL	329	0.98 (0.96–1.00)	.1	62	1.02 (0.99–1.05)	.2
Baseline aBMD-Z	–	–	–	108	0.22 (0.11–0.50)	<.001a

tTG, tissue transglutaminase.

^aP < .05.