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Table 1 Demographic and neuropsychological characteristics of participant groups

From: The Chinese version of story recall: a useful screening tool for mild cognitive impairment and Alzheimer’s disease in the elderly

Group NC n = 249 MCI n = 134 AD n = 97 All type of dementia n = 161 X2 P
Age 66.94 ± 8.87 69.91 ± 8.38** 71.09 ± 9.04**▲▲ 70.93(9.15)** 20.052 0.000
Education 12.89 ± 3.30 11.32 ± 3.84** 10.63 ± 4.49**▲▲ 10.55(4.39)** 23.622 0.000
MMSE 28.41 ± 1.50 26.98 ± 2.04** 15.69 ± 5.91**▲▲ 16.28 (6.06)** 255.721 0.000
HAMD 3.78 (3.30) 3.84 (3.12) 2.42 (2.12) 2.78 (2.47) 17.484 0.001
Sex (Male/Female) 158/91 76/58 54/43 81/80 2.597 0.273
Race (Han/Others) 238/11 127/6 92/4 153/7 0.016 0.993
Concomitant diseases       
Hypertension 107 62 30 63 5.727 0.126
Hyperlipidemia 93 33 8 21 46.632 0.000
Diabetes 53 21 14 30 2.828 0.419
Stroke 57 36 13 65 26.287 0.000
History of smoking 45 26 12 39 5.681 0.128
History of drinking 30 19 11 29 3.543 0.315
Family history of dementia 42 27 20 29 1.105 0.776
Story recall test       
ISR 30.03 ± 8.58 13.91 ± 8.79** 4.02 ± 6.06**▲▲ 4.49 ± 5.964**▲▲ 440.559 0.000
DSR 26.60 ± 8.49 9.40 ± 8.88** 1.60 ± 4.58**▲▲ 1.63 ± 4.315**▲▲ 460.195 0.000
  1. Notes: Means ± SD was presented except for sex. **P ≤ 0.01 MCI/AD vs NC; ▲▲P ≤ 0.01 MCI vs AD.
  2. NC = normal cognition; MCI = mild cognitive impairment. AD = Alzheimer’s disease. MMSE = Mini-mental State Examination; DSR = Delayed story recall; ISR = Immediate story recall; HAMD = Hamilton depression rating scale.