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Table 2 Assessment of the association between the cardio-metabolic and socio-demographic risk factors and dependency in the IADL using simple and multiple logistic regressions

From: Cardio-metabolic and socio-demographic risk factors associated with dependency in basic and instrumental activities of daily living among older Iranian adults: Bushehr elderly health program

Risk Factor

Dependent No. (%)

Crude ORa (95%CI)

P valueb

Adjusted ORa (95%CI)c

P valued

Age (years)

60–64

267 (48.5)

1

1

65–69

453 (52.3)

1.2 (0.9–1.4)

0.16

1.1 (0.8–1.3)

0.70

70–74

196 (57.5)

1.4 (1.1–1.9)

0.009

1.3 (1.0–1.7)

0.10

75–79

172 (70.2)

2.51 (1.8–3.5)

< 0.001

1.9 (1.3–2.7)

< 0.001

80–84

100 (80.7)

4.43 (2.8–7.1)

< 0.001

3.5 (2.1–5.8)

< 0.001

≥ 85

47 (90.4)

10.0 (3.9–25.5)

< 0.001

6.6 (2.5–17.3)

< 0.001

Sex

Female

817 (69.0)

1

1

Male

418 (42.1)

0.3 (0.3–0.4)

< 0.001

0.4 (0.4–0.5)

< 0.001

Education

No education

533 (75.1)

1

1

Primary School

465 (58. 6)

0.5 (0.4–0.6)

< 0.001

0.6 (0.5–0.8)

< 0.001

Guidance school

81 (40.9)

0.23 (0.2–0.3)

< 0.001

0.4 (0.3–0.5)

< 0.001

High school

103 (34.3)

0.17 (0.1–0.2)

< 0.001

0.3 (0.2–0.4)

< 0.001

Academic

53 (29.9)

0.1 (0.1–0.2)

< 0.001

0.3 (0.2–0. 5)

< 0.001

Diabetes mellitus

No

770 (53.4)

1

1

Yes

462 (63.0)

1.49 (1.2–1. 8)

< 0.001

1.4 (1.2–1.7)

< 0.001

Hypertension

No

294 (50.6)

1

Yes

941 (58.9)

1.4 (1.2–1.7)

0.001

High total cholesterol

No

825 (56.1)

1

Yes

409 (57.8)

1.1 (0. 9–1.3)

0.47

Low HDL cholesterol

No

577 (52.2)

1

Yes

657 (61.2)

1.4 (1.2–1.7)

< 0.001

High LDL cholesterol

No

643 (57.0)

1

Yes

591 (56. 5)

1.0 (0.8–1.2)

0.83

High serum triglyceride

No

841 (56. 6)

1

Yes

393 (56.9)

1.0 (0.8–1.2)

0.89

Smoking

Never

525 (53.9)

1

1

Past

476 (63.2)

1.5 (1.2–1. 8)

< 0.001

1.3 (1.0–1.6)

0.047

Current

234 (51.8)

0.9 (0.7–1.2)

0.45

0.8 (0.6–1.1)

0.14

BMI

< 18.5

24 (57.1)

1

18.5–24.9

352 (56.2)

1.0 (0.5–1.8)

0.91

25–29.9

496 (53.1)

0.9 (0.5–1.6)

0.61

≥30

363 (62.9)

1.3 (0.7–2.4)

0.5

High Waist Circumference

No

417 (56.3)

1

Yes

818 (56.9)

1.0 (0.9–1.2)

0.8

Physical Activity

No

993 (60.2)

1

1

Yes

242 (45.8)

0.6 (0.5–0.7)

< 0.001

0.7 (0.5–0.8)

< 0.001

Daily intake of calories

1534.0 (582.4)e

.9996 (.9995–.9998)

< 0.001

  1. a: Prevalence Odds Ratio: They indicate what is the chance of having dependency in the IADL in each group compared to the reference group (first group) of each risk factor?
  2. b: In the bivariate analysis
  3. c: Adjusted OR (95%CI) have been displayed only for the risk factors that remained in the final multiple logistic model, after fitting the model by the backward method. The risk factors “age”, “sex”, “education”, “diabetes mellitus”, “hypertension”, “low HDL cholesterol”, “smoking”, “physical activity” and “daily intake of calories” entered into the first multiple logistic model and after fitting the model by the backward method, the covariates “age”, “sex”, “education”, “diabetes mellitus”, “smoking” and “physical activity” remained in the final model
  4. d: In the multiple logistic regression
  5. e: Mean (Standard Deviation)