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Table 1 Demographic and clinical characteristics of delirium and non-delirium patients

From: Incidence, predictors and health outcomes of delirium in very old hospitalized patients: a prospective cohort study

Variables

Total (N = 637)

Delirium

(n = 109)

Non-delirium

(n = 528)

Age (years) (mean, SD)

85.79 ± 3.69

86.95 ± 4.21

85.56 ± 3.54

Sex (n%)

 Male

464(72.8)

77(70.6)

387(73.3)

 Female

173(27.2)

32(29.4)

141(26.7)

Marital status (n%)

 Married

512(80.4)

80(73.4)

432(81.8)

 Single/divorced /windowed

125(19.6)

29(26.6)

96(18.2)

Education (n%)

 Illiteracy/primary school

105(16.5)

26(23.9)

79(15.0)

 Middle school

115(18.1)

22(20.2)

93(17.6)

 High school/secondary technical

155(24.3)

24(22.0)

131(24.8)

 College or above

262(41.1)

37(33.9)

225(42.6)

Smoking (n%)

 Yes

390(61.2)

65(59.6)

325(61.6)

 No

247(38.8)

44(40.4)

203(38.4)

Alcohol use (n%)

 Yes

506(79.4)

80(73.4)

426(80.7)

 No

131(20.6)

29(26.6)

102(19.3)

Number of Medications (mean, SD)

3.92 ± 2.39

6.25 ± 2.46

3.44 ± 2.07

CCI (mean, SD)

1.85 ± 1.80

2.83 ± 2.13

1.64 ± 1.65

Emergency admission (n%)

 Yes

81(12.7)

34(31.2)

47(8.9)

 No

556(87.3)

75(68.8)

481(91.1)

Vision (n%)

 Normal

83(13.1)

17(15.6)

66(12.5)

 Impairment

554(86.9)

92(84.4)

462(87.5)

Hearing (n%)

 Normal

128(20.1)

20(18.3)

108(20.5)

 Impairment

509(79.9)

89(81.7)

420(79.5)

Sleep (n%)

 Normal

112(17.6)

26(23.9)

86(13.8)

 Impairment

525(82.4)

83(76.1)

442(86.2)

Pain (n%)

 Yes

349(54.8)

71(65.1)

278(52.7)

 No

288(45.2)

38(34.9)

250(47.3)

Constipation (n%)

 Yes

188(29.5)

53(48.6)

135(25.6)

 No

449(70.5)

56(51.4)

393(74.4)

Cognitive function (n%)

 Normal

404(63.4)

10(9.2)

394(74.6)

 Mild cognitive impairment

139(21.8)

38(34.9)

101(19.1)

 Moderate cognitive impairment

94(14.8)

61(56.0)

33(6.3)

ADL (n%)

 Normal

120(18.8)

13(11.9)

107(20.3)

 Impairment

517(81.2)

96(88.1)

421(79.7)

Nutrition (n%)

 Normal

390(61.2)

43(39.4)

347(65.7)

 Malnutrition

247(38.8)

66(60.6)

181(34.3)

Depression (n%)

 Yes

108(17.0)

60(55.0)

48(9.1)

 No

529(83.0)

49(45.0)

480(90.9)

Infection (n%)

 Yes

145(22.8)

62(56.9)

83(15.7)

 No

492(77.2)

47(43.1)

445(84.3)

  1. Abbreviations: CCI Charlson Comorbidity Index, ADL Activity of Daily Life
  2. Data presented as mean ± SD or n (%)