Table 2

Bone mineral density in patients with psoriatic arthritis and controls in the HUNT 3 study

DXA Females and males	PsA n=69	Controls n=11703	Mean difference (95% CI) (PsA vs controls)	p Value*	p Value†
Left femoral neck
BMD	0.960 (0.134)	0.926 (0.157)	0.034 (-0.003 to 0.071)	0.07	0.02
T-score	−0.42 (0.99)	−0.70 (1.24)	0.30 (0.04 to 0.52)	0.02	0.02
Left total hip
BMD	1.013 (0.141)	0.982 (0.158)	0.030 (-0.007 to 0.067)	0.11	0.11
T-score	−0.15 (1.04)	−0.41 (1.22)	0.26 (-0.03 to 0.54)	0.09	0.11
Spine L1–L4
BMD	1.213 (0.177)	1.147 (0.183)	0.065 (0.021 to 0.108)	0.003	0.003
T-score	0.15 (1.43)	−0.39 (1.50)	0.55 (0.19 to 0.91)	0.003	0.003
Females	PsA n=45	Controls n=7525	Mean difference (95% CI) (PsA vs controls)	p Value*	p Value‡
Left femoral neck
BMD	0.921 (0.106)	0.897 (0.155)	0.024 (-0.008 to 0.056)	0.14	0.19
T-score	−0.487 (0.88)	−0.69 (1.29)	0.20 (-0.06 to 0.47)	0.14	0.19
Left total hip
BMD	0.973 (0.115)	0.946 (0.153)	0.026 (-0.007 to 0.061)	0.13	0.30
T-score	−0.22 (0.96)	−0.45 (1.28)	0.22 (-0.065 to 0.51)	0.13	0.30
Spine L1–L4
BMD	1.174 (0.148)	1.118 (0.181)	0.056 (0.003 to 0.109)	0.04	0.04
T-score	−0.05 (1.23)	−0.52 (1.51)	0.46 (0.02 to 0.91)	0.04	0.04

Mean (±SD).
*Independent samples t-test,
† Linear regression analysis with adjustments made for age, sex, BMI, physical activity, smoking, asthma/COPD and reason for invitation to DXA,
‡ Linear regression analysis with adjustments made for age, BMI, physical activity, smoking, asthma/COPD and reason for invitation to DXA.
BMD, bone mineral density; BMI, body mass index; DXA, dual-energy X-ray absorptiometry; COPD, chronic obstructive pulmonary disease; HUNT, Nord-Trøndelag Health Study; PsA, psoriatic arthritis.