Table 3

Comparison of baseline characteristics between Wave 1 subjects with and without mortality data available (males).

Mortality data available

(N = 9,163)

Mortality data not available

(N = 4,648)

Significance of the difference (P)


Frailty variables


Exhaustion: yes (%)

25.3

27.4

0.007χ


Weight loss: yes (%)

5.9

7.8

< 0.001χ


Handgrip strength, Kg: mean (SD)

43.6 (10.5)

42.4 (11.5)

< 0.001μ


Slowness: yes (%)

10.9

13.6

< 0.001χ


Low activity: hardly ever, or never (%)

8.5

14.6

< 0.001χ


Frailty classes


Non-frail (%)

83.9

79.0

< 0.001χ


Pre-frail (%)

13.5

17.0

< 0.001χ


Frail (%)

2.7

4.0

< 0.001χ


Sociodemographic


Age: mean (SD)

64.2 (9.7)

64.0 (10.1)

0.071μ


Years of education: mean (SD)

10.4 (4.5)

10.5 (4.5)

0.018μ


Physical


Self-rated health (best:1; worst:5): mean (SD)

2.9 (1.1)

3.0 (1.2)

< 0.001μ


No. chronic diseases: mean (SD)

1.4 (1.3)

1.5 (1.4)

0.046μ


No. symptoms: mean (SD)

1.2 (1.4)

1.3 (1.5)

0.080μ


No. contacts with doctor in last year: mean (SD)

5.7 (9.0)

7.4 (11.9)

< 0.001μ


Admitted to hospital in last year (%)

13.1

14.9

0.003χ


Functional


No. limitations with ADLs: mean (SD)

0.16 (0.66)

0.22 (0.90)

0.004μ


No. limitations with IADLs: mean (SD)

0.23 (0.89)

0.34 (1.07)

< 0.001μ


Received home care: personal/nursing (%)

3.3

3.4

0.974χ


Received home care: domestic tasks (%)

2.7

3.4

0.058χ


Psychological and cognitive


EURO-D score (min: 0; max: 12) (SD)

1.8 (1.9)

2.0 (2.2)

< 0.001μ


Verbal fluency test score: mean (SD)

19.3 (7.3)

18.6 (7.5)

< 0.001μ


Delayed word recall score: mean (SD)

3.2 (1.9)

3.0 (1.9)

< 0.001μ


χ Chi-squared test; μ Mann-Whitney U test. Significant P values (< 0.01) are indicated in bold.

Romero-Ortuno et al. BMC Geriatrics 2010 10:57   doi:10.1186/1471-2318-10-57

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