Table 1 Demographic data and correlations.

From: Delineating the cognitive-neural substrates of writing: a large scale behavioral and voxel based morphometry study

Variables			Corr. Word-Writing		Corr. Number-Writing
Variables	Analysis 1 (N ≤ 740)	Analysis 2 (N = 276)	Analysis 1 (N ≤ 740)	Analysis 2 (N = 276)	Analysis 1 (N ≤ 740)	Analysis 2 (N = 276)
Gender (M/F)	322/418	131/136
Right/left handed	656/68	267/0
	mean, med (std)	mean, med (std)	r	r	r	r
Age Years	69.24, 71 [13.94]	70.28, 73 [14.29]	−0.052	−0.137^£	−0.170**	−0.188*
Education Years	11.46, 11 [2.74]	11.40, 11 [2.61]	0.172**	0.205^£	0.073^£	0.152^£
Stroke-to-scan Days	6.74, 1 [14.48]	6.75, 2 [11.71]	−0.042	−0.011	−0.019	0.074
Stroke-to-BCoS Days	27.62, 19 [27.24]	23.32, 16 [20.92]	−0.106^£	−0.067	−0.146**	−0.151^£
Barthel Index	13.32, 14 [5.66]	13.83, 15 [5.33]	0.159**	0.194^£	0.251**	0.240**
Cognitive data
Orientation (max = 8)	7.46, 8 [1.41]	7.51 [1.34]	0.420**	0.400**	0.55**	0.519**
Picture naming (max = 14)	10.82, 12 [3.36]	10.23, 12 [3.91]	0.527**	0.592**	0.618**	0.640**
Sentence construction (max = 8)	6.94, 8 [1.88]	6.50, 8 [2.47]	0.418**	0.506**	0.579**	0.672**
Sentence reading (max = 42)	37.44, 41 [9.54]	34.98, 41 [12.72]	0.500**	0.520**	0.554**	0.596**
Number reading (max = 9)	7.57, 9 [2.56]	7.16, 9 [2.98]	0.549**	0.574**	0.696**	0.708**
Multi step object use (max = 12)	10.26, 12 [3.32]	9.91, 12 [3.58]	0.315**	0.331**	0.46**	0.486**
Meaningless gest imitation (max = 12)	9.42, 10 [2.81]	9.31, 10 [2.91]	0.4**	0.465**	0.527**	0.543**
Complex Figure Copy (max = 47)	34.48, 38 [11.52]	33.94, 38 [12.56]	0.362**	0.279**	0.492**	0.562**
Writing tasks
Numb writing (max = 5)	3.75, 5 [1.70]	3.54, 5 [1.85]	0.633**	0.700**
Word writing (max = 5)	3.02, 3 [1.75]	2.74, 3 [1.87]			0.633**	0.700**

^£p < 0.05 uncorrected; **P < 0.05 corrected (uncorrected p < 0.05/26). Corr, Correlation with number or word writing; Analysis 1 – descriptive and correlation for the sample that contributed to behavioral analyses; Analysis 2 – descriptive and correlation for the sample that contributed to VBM analyses. Med, median; std, standard deviation; max, maximum score in the task; gest, gesture; Numb, number.
The number of patients contributing to each variable in Analysis 1, age, n = 740; Education, n = 722; stroke-to-scan, n = 477; stroke-to-BCoS n = 740; Barthel Index n = 733; Orientation, n = 733, Picture naming, n = 730; Sentence construction, n = 730; Sentence reading, n = 707; Number reading, n = 715; Multistep object use, n = 722; meaningless gesture imitation, n = 737; complex figure copy, n = 721; number and word writing, n = 740. In analysis 267 contributed to all analyses.

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Table 1 Demographic data and correlations.

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