Association of bone turnover markers and cognitive function in Chinese chronic schizophrenia patients with or without vitamin D insufficiency

Table 2 Cognition and bone turnover markers of schizophrenia patients with or without vitamin D insufficiency

	Total sample (n = 118)	VDS (n = 72)	VDI (n = 46)	t/Z	P
RBANS
Immediate Memory	61.08 ± 19.53	60.56 ± 18.91	61.89 ± 20.66	-0.166	0.868
Visuospatial	79.42 ± 17.19	79.38 ± 17.49	79.48 ± 16.91	-0.263	0.793
Language	79.46 ± 14.66	79.32 ± 14.94	79.67 ± 14.38	-0.053	0.958
Attention	87.88 ± 12.83	88.04 ± 12.69	87.63 ± 13.17	-0.048	0.962
Delayed Memory	68.78 ± 20.72	67.89 ± 20.58	70.17 ± 21.10	-0.744	0.457
Total score	68.97 ± 14.59	68.53 ± 14.14	69.65 ± 15.41	-0.271	0.787
CTX (pg/ml)	330.25 ± 60.82	315.33 ± 59.88	353.61 ± 55.19	-3.49	0.001
PINP (ng/ml)	74.69 ± 14.94	76.80 ± 15.20	71.39 ± 14.04	1.943	0.054
OCN (ng/ml)	58.29 ± 14.42	61.12 ± 13.43	53.86 ± 14.94	2.74	0.007
OPN (ng/ml)	42.09 ± 9.99	40.84 ± 9.61	44.04 ± 10.35	-1.711	0.090

RBANS: Repeatable Battery for the Assessment of Neuropsychological Status; CTX: C-terminal cross-linking Telopeptide of type I collagen; PINP: Procollagen type I N-terminal Propeptide; OCN: Osteocalcin; OPN: Osteopontin. Bolded P values < 0.05

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