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Table 1 Baseline characteristics of the study population according to tobacco use status

From: Epidemiology and prevalence of tobacco use in Tehran; a report from the recruitment phase of Tehran cohort study

Characteristic

No tobacco use (n = 6339 [76.6%])

Former tobacco use (n = 334 [4.0%])

Current tobacco use (n = 1599 [19.3%])

P-value*

Age, year

53.9 ± 12.74

61.0 ± 13.22

51.7 ± 12.02

 < 0.001

Age category, year

   

 < 0.001

 35–44

1731 (74.6)

46 (2.0)

544 (23.4)

 

 45–54

1717 (77.9)

63 (2.9)

423 (19.2)

 

 55–64

1512 (77.1)

73 (3.7)

377 (19.2)

 

 65–74

922 (75.6)

101 (8.3)

196 (16.1)

 

  ≥ 75

457 (80.6)

51 (9.0)

59 (10.4)

 

Sex

   

 < 0.001

 Women

4074 (91.2)

46 (1.0)

346 (7.7)

 

 Men

2265 (59.5)

288 (7.6)

1253 (32.9)

 

Marital status

   

0.197

 Non-married

53 (79.1)

5 (7.5)

9 (13.4)

 

 Married

6285 (76.6)

328 (4.0)

1589 (19.4)

 

Education, year

   

 < 0.001

 Illiterate

499 (85.3)

29 (5.0)

57 (9.7)

 

 1–5

672 (80.0)

44 (5.2)

124 (14.8)

 

 6–12

3203 (74.5)

170 (4.0)

927 (21.6)

 

  > 12

1961 (77.2)

90 (3.5)

490 (19.3)

 

Body mass index, kg/m2

   

 < 0.001

  < 20

148 (65.2)

8 (3.5)

71 (31.3)

 

 20–24.9

1532 (73.8)

85 (4.1)

458 (22.1)

 

 25–29.9

2608 (76.2)

146 (4.3)

670 (19.6)

 

 30–34.9

1434 (79.8)

66 (3.7)

296 (16.5)

 

  ≥ 35

564 (82.7)

24 (3.5)

94 (13.8)

 

Physical activity

   

 < 0.001

 Low

1135 (78.3)

77 (5.3)

237 (16.4)

 

 Intermediate

3712 (78.0)

176 (3.7)

874 (18.4)

 

 High

1459 (73.0)

80 (4.0)

460 (23.0)

 

Opium consumption

   

 < 0.001

 No

6245 (80.0)

274 (3.5)

1287 (16.5)

 

 Yes

89 (20.2)

58 (13.2)

293 (66.6)

 

Alcohol consumption

   

 < 0.001

 No

6094 (81.3)

247 (3.3)

1158 (15.4)

 

 Yes

231 (31.2)

84 (11.3)

426 (57.5)

 

Hypertension

   

 < 0.001

 No

4478 (75.3)

191 (3.2)

1279 (21.5)

 

 Yes

1860 (80.1)

143 (6.2)

319 (13.7)

 

Diabetes mellitus

   

 < 0.001

 No

5319 (76.2)

256 (3.7)

1401 (20.1)

 

 Yes

1020 (78.8)

78 (6.0)

197 (15.2)

 

Dyslipidemia

   

 < 0.001

 No

4211 (75.6)

190 (3.4)

1171 (21)

 

 Yes

2127 (78.8)

144 (5.3)

427 (15.8)

 

Chronic kidney disease

   

 < 0.001

 No

6287 (76.7)

323 (3.9)

1591 (19.4)

 

 Yes

52 (73.2)

11 (15.5)

8 (11.3)

 

Chronic lung disease

   

0.009

 No

6131 (76.6)

314 (3.9)

1555 (19.4)

 

 Yes

202 (75.9)

20 (7.5)

44 (16.5)

 

Coronary artery disease

   

 < 0.001

 No

5800 (77.4)

245 (3.3)

1452 (19.4)

 

 Yes

538 (69.5)

89 (11.5)

147 (19.0)

 
  1. Data are presented as mean ± standard deviation for continuous and number (Percentage calculated for rows) for categorical variables
  2. *P < 0.05 was considered significant
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