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Table 3 Comparison of single item and total IQCODE score of different severity of dementia

From: Informant questionnaire on cognitive decline in the elderly (IQCODE) for assessing the severity of dementia in patients with Alzheimer’s disease

iterm Mild dementia
(n =107)
Moderate dementia
(n = 194)
Severe dementia
(n = 93)
F (P)
1 4.07 ± 0.72 4.32 ± 0.76** 4.92 ± 0.30** 43.820(0.000)
2 4.58 ± 0.80 4.79 ± 0.56* 4.94 ± 0.25** 9.474(0.000)
3 4.73 ± 0.56 4.81 ± 0.52 4.92 ± 0.27* 3.763(0.024)
4 3.71 ± 1.01 4.34 ± 0.92** 4.71 ± 0.72** 32.130(0.000)
5 3.60 ± 0.93 3.51 ± 0.79 4.00 ± 0.88** 10.832(0.000)
6 3.74 ± 0.92 4.07 ± 0.79** 4.59 ± 0.61** 29.307(0.000)
7 3.92 ± 0.84 4.25 ± 0.77** 4.80 ± 0.48** 36.338(0.000)
8 3.75 ± 0.89 4.11 ± 0.81** 4.70 ± 0.62** 36.349(0.000)
9 3.86 ± 0.92 4.27 ± 0.72** 4.77 ± 0.53** 37.726(0.000)
10 3.94 ± 0.88 4.34 ± 0.72** 4.86 ± 0.46** 40.532(0.000)
11 4.59 ± 0.75 4.78 ± 0.60* 4.91 ± 0.32* 7.711(0.001)
12 3.62 ± 0.78 3.86 ± 0.91* 4.51 ± 0.62** 31.684(0.000)
13 3.71 ± 0.88 4.08 ± 0.91** 4.75 ± 0.60** 39.380(0.000)
14 3.64 ± 0.92 4.08 ± 0.92** 4.75 ± 0.54** 42.858(0.000)
15 3.79 ± 0.87 4.10 ± 0.89** 4.80 ± 0.47** 40.895(0.000)
16 4.17 ± 0.57 4.40 ± 0.73** 4.82 ± 0.55** 25.291(0.000)
Total score 63.38 ± 9.49 68.40 ± 8.73** 75.96 ± 3.52** 60.627(0.000)
  1. Comparison of mild and moderate groups marked on moderate group, and that of moderate and severe groups marked on severe group, *P < 0.05;**P < 0.01