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. 2024 Feb 23;82(3):1–10. doi: 10.1055/s-0044-1779506

Table 3. Sociodemographic, psychosocial, and cognitive characterization of the total sample divided by educational level (n = 419). FIBRA Study, 2016-2017.

Variables Educational level p-value
Illiterate
n = 57 (14%)
1-4
n = 244 (58%)
5-8
n = 68 (16%)
9+
n = 50 (12%)
Age, n (%) MD (IQR) 81 (76-84) 80 (77-82) 78 (75-81.3) 79.5 (77-83.8) 0.058*
Family income, n (%) MD (IQR) 1,874 (1,264-2,811) c,d 2,000 (1,625-3,000) d 2,500 (1,800-4,000) d,a 4,000 (2,950-7,000) b,c,a <0.001*
Missing 12 26 6 3
Live alone, n (%) Yes 8 (14%) 41 (17%) 14 (21%) 14 (28%) <0.001 ++
No 36 (63%) 144 (59%) 39 (57%) 20 (40%)
Missing 13 (23%) 59 (24%) 15 (22%) 16 (32%)
MMSE MD (IQR) 20 (18-23) b,c,d 25 (23-27) c,d,a 26 (25-27.3) b,d,a 27 (26-28) b,c,a <0.001*
VF MD (IQR) 10 (8-12) c,d 11 (9-14) 12 (9.7-14.3) a 12 (11-16.8) a 0.005*
CDT MD (IQR) 0 (0-1) b,c,d 3 (1-4) d,a 3 (2-4) a 4 (2-5) b,a <0.001*
Missing 0 1 0 0
Episodic memory MD (IQR) 0 (0-3) b,c,d 2 (1-5) d,a 3 (1-5) a 5 (3-6) b,a <0.001*
Missing 1 1 0 0
Neuroticism MD (IQR) 27.5 (23.8-33.3) 26.5 (21-31) 24.5 (20-29) 25 (20-30) 0.229*
Missing 1 12 6 1
PiL MD (IQR) 3.4 (3-3.9) 3.6 (3.1-4) 3.7 (3.2-4) 3.8 (3.2-4.3) 0.183*
Missing 3 10 3 1
GDS, n (%) ≥6 12 (21%) 49 (20%) 12 (18%) 9 (18%) 0.972 ++
0.211*
≤5 45 (79%) 195 (80%) 56 (82%) 41 (82%)
MD (IQR) 3 (2-5) 3 (2-5) 2 (1-4.2) 2 (1-4)

Abbreviations: CDT, Clock Drawing Test; GDS, Geriatric Depression Scale; IQR, interquartile range; MD, median; MMSE, Mini-Mental State Examination; n, sample size; PiL, Purpose in Life; VF, Verbal Fluence (animal category).

Notes: *Kruskal-Wallis test (with post hoc comparisons, Dwass-Steel-Critchlow-Fligner [DSCF]); ++ Qui-square test; p-value < 0.05 shows statistical significance. a = different from illiterates (p < 0.05); b = different from 1-4 years (p < 0.05); c = different from 5-8 years (p < 0.05); d = different from 9+ years (p < 0.05).