Table 2.

Correlation analysis.

		C(25-OH-Vitamin D) a	C(Anticholinergic) a
TMT−A (in s)	Pearson’s r	** −0.373	0.169
	p-value	<0.001	0.097
	N	133	61
TMT−B (in s)	Pearson’s r	** −0.336	0.174
	p-value	<0.001	0.092
	N	130	60
Verbal Memory	Pearson’s r	0.175	−0.124
	p-value	0.020	0.173
	N	139	60
Working Memory Correct Answers	Pearson’s r	0.131	−0.048
	p-value	0.062	0.358
	N	139	60
Working Memory Longest Sequence	Pearson’s r	0.204	−0.022
	p-value	0.008	0.434
	N	139	60
Motor Speed	Pearson’s r	0.107	−0.122
	p-value	0.108	0.184
	N	136	57
Fluent Speech Category	Pearson’s r	0.195	0.001
	p-value	0.011	0.496
	N	137	59
Fluent Speech Letter	Pearson’s r	0.136	−0.044
	p-value	0.056	0.370
	N	138	59
Symbol Coding	Pearson’s r	** 0.280	−0.070
	p-value	<0.001	0.299
	N	139	59
Tower of London	Pearson’s r	** 0.274	−0.103
	p-value	<0.001	0.220
	N	137	59

** Correlation remains statistically significant after Bonferroni correction for multiple testing. Given p-values in the table are uncorrected. Corrected p-values are given in the main text. ^a C (25-OH-vitamin D) and C (anticholinergic) were log-transformed, as the curve fitting revealed a logarithmic relationship.