Factors associated with chronic musculoskeletal pain in patients with chronic kidney disease

BMC Nephrology

Table 3 Factors associated with chronic MS pain: univariate and multivariate analyses

	Univariate	95% confidence interval	p	Multivariate	95% confidence interval	p
	Odds ratio	95% confidence interval	p	Odds ratio	95% confidence interval	p
All patients
Age (y)	1.002	0.985–1.018	0.913
Male gender	2.295	1.562–3.374	<0.001
Body mass index (Kg/m²)	1.092	1.037–1.151	0.001
Co-morbidity of DM	0.908	0.603–1.368	0.644
Co-morbidity of hyperuricemia	7.167	4.655–11.034	<0.001	8.235	2.129–31.852	0.002*
Co-morbidity of back pain	85.808	11.722–628.114	<0.001
Systolic blood pressure (mmHg)	1.015	1.004–1.026	0.007
Haemoglobin (g/dL)	1.256	1.050–1.503	0.013
Ca × P (mg²/mL²)	1.226	1.044-1.520	0.010	1.028	1.008–1.131	0.022*
Patients with co-morbidity of hyperuricemia
Age (y)	0.985	0.961–1.011	0.258
Male gender	2.080	0.964–4.486	0.062
Body mass index (Kg/m²)	1.093	0.981–1.194	0.057
Co-morbidity of DM	0.481	0.235–0.981	0.044	0.413	0.196–0.815	0.020^#
Co-morbidity of back pain	8.995	0.651–18.143	0.998
Systolic blood pressure (mmHg)	1.011	0.992–1.031	0.248
Haemoglobin (g/dL)	1.415	1.016–1.971	0.040
Ca × P (mg²/mL²)	0.994	0.937–1.054	0.835
Patients without co-morbidity of hyperuricemia
Age (y)	1.020	0.983–1.042	0.076
Male gender	0.958	0.548–1.676	0.881
Body mass index (Kg/m²)	1.027	0.948–1.113	0.515
Co-morbidity of DM	1.505	0.845–2.679	0.165
Co-morbidity of back pain	6.182	0.353–17.313	0.998
Systolic blood pressure (mmHg)	1.013	0.997–1.029	0.107
Haemoglobin (g/dL)	1.085	0.842–1.398	0.528
Ca × P (mg²/mL²)	1.083	1.012–1.159	0.021	1.093	1.010–1.179	0.027^#

*p from logistic regression adjusted for age, male gender, body mass index, co-morbidity of diabetes, hyperuricemia, and back pain, systolic blood pressure, serum haemoglobin, and product of calcium and phosphate levels.
#p from logistic regression adjusted for age, male gender, body mass index, co-morbidity of diabetes, and back pain, systolic blood pressure, serum haemoglobin, and product of calcium and phosphate levels.
Abbreviations: MS, musculoskeletal; DM, diabetes mellitus, CA × P, product of calcium and phosphate.

ISSN: 1471-2369