Table 1 Baseline demographic characteristics for the total sample and for each of the three latent profiles in BBHI and Medit-Ageing

From: Psychological profiles associated with mental, cognitive and brain health in middle-aged and older adults

 

Total sample

Profile 1 (low protective)

Profile 2 (high risk)

Profile 3 (well-balanced)

Differences between profilesd

Planned pairwise comparisons

BBHI

N (%)

750 (100.0)

196 (26.136)

149 (19.87)

405 (54.0)

 Age, years

51.4 (7.0)

52.2 (7.0)

49.4 (6.5)

51.8 (7.1)

F = 8.3, P < 0.001

Profile 1 > profile 2 (β = 3.8, P < 0.001)

Profile 1 ≈ profile 3 (β = 0.7, P = 0.470)

Profile 2 < profile 3 (β = 3.8, P < 0.001)

 Sex (female), N (%)

379 (51.5)

84 (42.9)

93 (62.4)

202 (49.9)

X2 = 13.1, P = 0.001

Profile 1 < profile 2 (χ2 = 12.2, P < 0.001)

Profile 1 ≈ profile 3 (χ2 = 2.3, P = 0.127)

Profile 2 > profile 3 (χ2 = 6.4, P = 0.012)

 Education, years

17.2 (3.8)

16.6 (3.7)

17.0 (3.9)

17.5 (3.7)

F = 4.1, P = 0.017

Profile 1 ≈ profile 2 (β = −0.9, P = 0.383)

Profile 1 < profile 3 (β = 2.8, P = 0.005)

Profile 2 ≈ profile 3 (β = −1.5, P = 0.141)

 Ethnicity (white), N (%)

693 (92.4)

176 (89.8)

142 (95.3)

375 (92.6)

X2 = 4.2, P = 0.121

APOE ε4 carriera, N (%)

60 (20.1)

18 (20.7)

16 (25.4)

26 (17.4)

X2 = 1.8, P = 0.412

Medit-Ageing

N (%)

282 (100.0)

59 (20.9)

64 (22.7)

159 (56.4)

 Age, years

71.1 (5.9)

72.5 (6.6)

69.8 (5.0)

71.1 (5.8)

F = 3.4, P = 0.036

Profile 1 > profile 2 (P = 0.027)

Profile 1 ≈ profile 3 (P = 0.252)

Profile 2 ≈ profile 3 (P = 0.627)

 Sex (female), N (%)

178 (63.1)

40 (67.8)

44 (68.8)

94 (59.1)

X2 = 2.5, P = 0.284

 Education, years

13.4 (3.4)

13.4 (3.9)

13.4 (3.2)

13.4 (3.3)

F = 0.0, P = 0.997

 Ethnicity (white)b, N (%)

142 (96.6)

55 (96.5)

30 (96.8)

57 (96.7)

X2 = 3.7, P = 0.713

APOE ε4 carrierc, N (%)

76 (28.6)

16 (27.6)

12 (20.3)

48 (30.2)

X2 = 3.0, P = 0.228

  1. N (%) is provided for categorical variables, and continuous variables are represented as mean (s.d.).
  2. aAPOE data available for 299 BBHI participants.
  3. bEthnicity data available for 147 Medit-Ageing participants.
  4. cAPOE data available for 266 Medit-Ageing participants.
  5. dX2 test statistics are presented for categorical variables; F-test statistics are presented for continuous variables.