Table 1

Baseline characteristics
Abnormal cognitive test results Statistic p value Significant post-hoc differences*
0 1 2
n = 55 n = 68 n = 77
Age, mean(SD) 80.6(8.8) 83.1(8.5) 85.8(6.6) F(2, 197) = 7.45 0.001 b
Male sex 46% 30% 31% χ2(2, N = 200) = 3.64 0.16 -
Living alone 54% 78% 68% χ2(2, N = 200) = 6.63 0.04 a
Home care 44% 61% 62% χ2(2, N = 200) = 4.51 0.11 -
Education ≤8 years 46% 61% 54% χ2(2, N = 188) = 2.45 0.29 -
In intervention 50% 53% 47% χ2(2, N = 200) = 0.56 0.76 -
Presenting complaint
Shortness of breath 37% 33% 26% χ2(2, N = 200) = 2.25 0.33 -
Fall 9% 3% 17% χ2(2, N = 200) = 7.87 0.02 c
Chest pain 9% 9% 8% χ2(2, N = 200) = 0.08 0.96 -
Infection 15% 9% 4% χ2(2, N = 200) = 4.69 0.10 -
General condition 3% 16% 9% χ2(2, N = 200) = 6.61 0.04 a
Pain 7% 2% 7% FET(0vs1) N =123 0.17 -
Neurological symptoms 2% 10% 5% FET(0vs1) N =123 0.07 -
Psychiatric 0% 3% 9% FET(0vs2) N =132 0.04 -
Laboratory value 9% 6% 5% FET(0vs2) N =132 0.49 -
Lower extremity symptoms 6% 7% 4% FET(1vs2) N =145 0.48 -
Other 2% 2% 7% FET(1vs2) N =145 0.21 -
MMSE, mean(SD) 26.5(2.0) 24.3(2.5) 18.9(3.2) F(2, 197) = 143.62 (<0.001) †† a, b, c
CDT, mean(SD) 4.7(0.5) 3.4(1.1) 2.4(0.9) F(2, 195) = 109.62 (<0.001) †† a, b, c

Baseline characteristics of the groups with 0, 1 and 2 abnormal cognitive tests.

* Significant differences (p < 0.05) after Bonferroni correction:

a = between 0 vs 1 abnormal cognitive test.

b = between 0 vs 2 abnormal cognitive tests.

c = between 1 vs 2 abnormal cognitive tests.

 = Fischer’s exact test (FET) was used due to expected counts < 5. All three pairs (0vs1, 0vs2 and 1vs2) were compared, the comparisons with the lowest p values are displayed.

†† = The p values of cognitive tests are in brackets as they were the criteria for the division.

Torisson et al.

Torisson et al. BMC Geriatrics 2012 12:47   doi:10.1186/1471-2318-12-47

Open Data