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. 2021 Sep 18;61(2):1564–1584. doi: 10.1007/s10943-021-01408-1

Table 3.

Mean score difference of GDS-15, OARS’s IADL, and MoCA score between different sociodemographic background and its association

Sociodemographic status GDS-15 OARS’s IADL MoCA
Mean SD Independent t-test
(P-value)
Pearson chi-square test
(Χ2(2) > , P-value)
Mean SD Independent t test
(P-value)
Pearson chi-square test
(Χ2(2) > , P-value)
Mean SD Independent t test
(P-value)
Pearson chi-square test
(Χ2(2) > , P-value)
Socioeconomic status

Low income (N = 108)

Medium to high income (N = 324)

4.18 ± 3.1

3.06 ± 2.4

0.000** 3.310, 0.069

10.51 ± 3.8

12.58 ± 2.5

0.000** 20.054, 0.000**

17.18 ± 7.6

22.6 ± 5.4

0.000** 21.883, 0.000**
Physical activity status

Not exercise (N = 141)

Exercise (N = 291)

3.95 ± 2.9

3.04 ± 2.4

0.001** 8.372, 0.004*

11.22 ± 3.6

12.47 ± 2.6

0.000** 8.897, 0.003*

19.76 ± 7.0

21.96 ± 6.0

0.001** 5.753, 0.016*
Level of education

Refuse tertiary education (N = 351)

Does not refuse tertiary education (N = 81)

3.54 ± 2.7

2.43 ± 2.1

0.001** 9.165, 0.002*

11.83 ± 3.1

13.05 ± 2.5

0.001** 6.385, 0.012*

20.33 ± 6.4

25.19 ± 4.9

0.000** 33.435, 0.000**

GDS-15 Geriatric Depression Scale 15, OARS’s IADL Older Americans Resources and Services Instrumental Activities of Daily Living; MoCA, Montreal Cognitive Assessment

*P-value < 0.05, **P-value < 0.001