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Table 6 Survival characteristics of participants according to dementia subtype

From: Dementia subtypes, cognitive decline and survival among older adults attending a memory clinic in Cape Town, South Africa: a retrospective study

Characteristics

All (n = 165)

AD (n = 117)

VND (n = 24)

DLB/PDD

(n = 11)

FTD (n = 3)

Mixed (n = 4)

F-test

p-value

Number of deaths

112

79

16

10

3

2

4.69a

0.321

(%)

67.9

67.5

66.7

90.9

100

50

0.17a

0.334

Mean Age at Death

(n = 112)

(n = 79)

(n = 16)

(n = 10)

(n = 3)

(n = 2)

  

(SD)

77.3 (7.3)

78.9 (7.4)

73.5 (5.7)

76.1 (5.6)

72 (7.2)

73 (0)

13.51b

0.009

Mean Follow-up time

Years (SD)

7.2 (3.3)

7.8 (3.4)

5.8 (2.6)

4.96 (2.5)

7.7 (1.9)

6.3 (4.4)

15.39b

0.004

Mean survival time (Deceased)

(n = 111)

(n = 78)

(n = 16)

(n = 10)

(n = 3)

(n = 2)

  

Years (SD)

6.7 (3.4)

7.3 (3.5)

5.5 (2.9)

4.8 (2.6)

7.7 (1.9)

4.1 (0.2)

11.15b

0.025

  1. achi-square value for the chi-square test of independence to compare two categorical variables
  2. bKruskal-Wallis tests: non-normally distributed data
  3. Abbreviations: n number, SD Standard Deviation, AD Major Neurocognitive Disorder due to Alzheimer’s disease, VND Major Vascular Neurocognitive Disorder, DLB Dementia with Lewy bodies, PDD Parkinson’s disease dementia, FTD Fronto-temporal dementia