Low vitamin D levels in post-menopausal women are associated with complex regional pain syndrome type I in surgically treated distal radius fractures

Table 4 Mean comparison analysis of seasonal vitamin D level and association analysis between season and CRPS I

Season	No. of patient (%)	Serum 25(OH)D₃ (mean ± SE, ng/mL)	No. of CRPS patients (%)	OR (95% CIs)
Spring	22 (100)	19.6 ± 1.8	7 (32)	1
Summer	18 (100)	19.7 ± 2.5	3 (17)	0.429 (0.093-1.98)
Fall	29 (100)	19.0 ± 1.7	4 (14)	0.343 (0.086-1.37)
Winter	38 (100)	19.9 ± 1.7	5 (13)	0.325 (0.088-1.191)
p value		0.988*	0.322†

DRF distal radius fracture, CRPS I complex regional pain syndrome type I, OR odd ratio, 95% CIs 95% confidence intervals
*p value: mean comparison analysis among 4 subgroups of season, computed using 1-way ANOVA
†p value: association analysis between CRPS I and seasons, computed using Fisher’s exact test

ISSN: 1749-799X