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Table 1 Baseline characteristics and prevalence of diabetes mellitus in the population of Tehran Cohort Study

From: Prevalence, awareness, treatment, and control of type 2 diabetes mellitus among the adult residents of tehran: Tehran Cohort Study

 

Normala

n=4563

Impaired Fasting Glucosea

n=2084

Diabetes Mellitusa

n=1504

p-value ‡

Age, mean ± SD, year

50.9 ± 12.51

54.7 ± 12.03

60.7 ± 11.33

<0.001

Age, year, n (%)

   

<0.001

 35-44

1715 (74.5)

463 (20.1)

125 (5.4)

 

 45-54

1245 (57.2)

627 (28.8)

305 (14.0)

 

 55-64

870 (45.3)

541 (28.1)

511 (26.6)

 

 65-74

496 (41.5)

315 (26.4)

383 (32.1)

 

 ≥75

237 (42.7)

138 (24.9)

180 (32.4)

 

Sex, n (%)

   

<0.001

 Men

1929 (51.7)

1104 (29.6)

698 (18.7)

 

 Women

2634 (59.6)

980 (22.2)

806 (18.2)

 

Marital status, n (%)

   

0.786

 Married

4511 (55.9)

2066 (25.6)

1489 (18.5)

 

 Non-married

37 (56.1)

15 (22.7)

14 (21.2)

 

Education, year, n (%)

   

<0.001

 Illiterate

271 (47.4)

120 (21.0)

181 (31.6)

 

 1-5

389 (47.2)

221 (26.8)

215 (26.1)

 

 6-12

2304 (54.5)

1128 (26.7)

799 (18.9)

 

 >12

1581 (63.2)

612 (24.5)

307 (12.3)

 

Waist circumference, mean ± SD, cm

93.6 ±11.26

98.6 ± 11.37

101.2 ±11.63

<0.001

Hip circumference, mean ± SD, cm

103.9 ±9.47

106.3 ±9.72

107.6 ±10.84

<0.001

Body mass index, kg/m2, n (%)

   

<0.001

 <20

171 (77.0)

39 (17.6)

12 (5.4)

 

 20-24.9

1361 (66.6)

420 (20.5)

263 (12.9)

 

 25-29.9

1886 (55.9)

898 (26.6)

589 (17.5)

 

 30-34.9

843 (47.8)

512 (29.0)

408 (23.1)

 

 ≥35

265 (39.6)

197 (29.4)

207 (30.9)

 

Hypertension, n (%)

   

<0.001

 No

3685 (63.0)

1486 (25.4)

674 (11.5)

 

 Yes

863 (37.8)

594 (26.0)

829 (36.3)

 

Dyslipidemia, n (%)

   

<0.001

 No

3456 (63.1)

1439 (26.3)

584 (10.7)

 

 Yes

1091 (41.2)

641 (24.2)

919 (34.7)

 

Chronic kidney disease, n (%)

   

<0.001

 No

4543 (56.2)

2069 (25.6)

1468 (18.2)

 

 Yes

20 (28.2)

15 (21.1)

36 (50.7)

 

Tobacco user, n (%)

   

<0.001

 Current

930 (59.1)

409 (26.0)

234 (14.9)

 

 Former

139 (43.0)

94 (29.1)

90 (27.9)

 

 Never

3476 (55.8)

1576 (25.3)

1179 (18.9)

 

Opium consumption, n (%)

   

0.566

 No

4304 (56.1)

1956 (25.5)

1415 (18.4)

 

 Yes

229 (53.5)

117 (27.3)

82 (19.2)

 

Alcohol consumption, n (%)

   

0.008

 No

4091 (55.6)

1882 (25.6)

1391 (18.9)

 

 Yes

441 (60.2)

185 (25.3)

106 (14.5)

 

Physical activity, n (%)

   

<0.001

 Low

678 (47.6)

355 (24.9)

391 (27.5)

 

 Intermediate

2636 (56.3)

1174 (25.1)

869 (18.6)

 

 High

1209 (61.4)

530 (26.9)

229 (11.6)

 
  1. Abbreviations: SD Standard deviation
  2. aPercentages are calculated in rows
  3. ‡ P-value is calculated between normal, impaired fasting glucose, and diabetes subgroups