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Table 1 Incidence rates of stroke according to the baseline exposure variables

From: Risk factors for ischemic stroke; results from 9 years of follow-up in a population based cohort of Iran

Exposure variable

No. (%) Total: 2378

Incidence (95%CI) * Exposure +

Incidence (95%CI) * Exposure −

P- Value†

Age, ≥ 65

645 (27.1)

6.6 (4.7-9.2)

2.3 (1.7-3.2)

< 0.001

Sex, male

1089 (45.8)

4.5 (3.3-6.0)

2.5 (1.7 -3.6)

0.017

Hypertension

1057 (44.4)

5.6 (4.3 -7.4)

1.7 (1.1-2.6)

< 0.001

Diabetes

544 (22.9)

6.3 (4.4-9.1)

2.6 (1.9-3.5)

< 0.001

Smoking

548 (23.0)

5.1 (3.4-7.7)

2.9 (2.2-3.9)

0.020

Obesity

707 (29.7)

3.4 (2.2-5.2)

3.4 (2.5-4.5)

0.995

High WC

1121 (47.1)

4.1 (3.0-5.6)

2.8 (1.9-4.0)

0.102

Low HDL-C

1062 (44.7)

3.5 (2.5-5.0)

3.3 (2.4-4.5)

0.732

Hypertriglyceridemia

955 (40.2)

4.1 (3.0-5.8)

2.9 (2.1-4.0)

0.134

Hypercholesterolemia

1017 (42.8)

3.4 (2.4-4.9)

3.3 (2.4-4.6)

0.906

Intervention

953 (40.1)

3.4 (2.3-4.9)

3.4 (2.5-4.6)

0.987

FH CVD

363 (15.3)

4.2 (2.4 -7.2)

3.2 (2.5-4.2)

0.410

CKD

964 (40.5)

5.0 (3.6-6.8)

2.4 (1.6-3.4)

0.001

  1. *Incidence density per 1000 person-years.
  2. †Based on Log Rank test for equality of stroke free survival between exposure-positive and exposure-negative groups.
  3. CI: confidence interval; WC: waist circumference; HDL-C: HDL cholesterol; Intervention: being in the intervention group; FH CVD: family history of premature cardiovascular disease; CKD: chronic kidney disease.