Table 1 General Characteristics of participants by smoking status

 Exposure

Workplace & home

422

(7.1)

132

(2.4)

978

(6.0)

<.0001

Workplace

2,875

(42.5)

2,160

(38.4)

3,382

(19.9)

Home

424

(5.8)

232

(3.7)

1,836

(10.2)

3,516

(44.5)

4,214

(55.5)

13,557

(63.9)

 Male

6,120

(86.8)

5,634

(83.4)

2,668

(18.5)

<.0001

 Female

1,117

(13.2)

1,104

(16.6)

17,085

(81.5)

 Married

5,789

(72.2)

6,154

(85.7)

17,183

(79.6)

<.0001

 Single

1,448

(27.8)

584

(14.3)

2,570

(20.4)

 19–29

1,113

(22.6)

524

(13.2)

2,557

(20.8)

<.0001

 30–39

1,852

(27.8)

1,026

(18.6)

3,689

(19.6)

 40–49

1,542

(23.2)

1,135

(22.4)

3,694

(21.7)

 50–59

1,216

(15.5)

1,214

(19.9)

3,676

(17.5)

 60–69

858

(6.5)

1,399

(13.8)

3,290

(11.0)

  ≥ 70

656

(4.4)

1,440

(12.0)

2,847

(9.5)

 Low

2,134

(30.2)

1,513

(22.3)

4,649

(24.8)

<.0001

 Middle-low

1,904

(25.7)

1,700

(25.8)

4,860

(24.8)

 Middle-high

1,674

(23.5)

1,784

(26.3)

5,055

(25.3)

 High

1,525

(20.6)

1,741

(25.5)

5,189

(25.1)

  Employed

5,510

(78.5)

4,388

(70.8)

10,207

(54.3)

<.0001

  Unemployed

1,727

(21.5)

2,350

(29.2)

9,546

(45.7)

1,295

(12.2)

1,661

(17.8)

6,138

(23.1)

<.0001

 Middle school

841

(10.6)

844

(11.1)

2,048

(9.7)

 High school

2,933

(45.7)

2,230

(37.8)

6,283

(37.0)

2,168

(31.5)

2,003

(33.4)

5,284

(30.2)

 Good

5,824

(82.8)

5,343

(82.5)

15,152

(79.8)

<.0001

 Bad

1,413

(17.2)

1,395

(17.5)

4,601

(20.2)

 2007

543

(8.0)

561

(9.1)

1,511

(8.0)

<.0001

 2008

1,457

(18.4)

1,240

(18.0)

3,732

(17.4)

 2009

1,650

(18.7)

1,406

(18.1)

4,318

(19.0)

 2010

1,329

(19.0)

1,252

(18.9)

3,570

(18.6)

 2011

1,208

(18.4)

1,177

(17.8)

3,262

(17.8)

 2012

1,050

(17.5)

1,102

(18.1)

3,360

(19.1)

Total

7,237

(26.9)

6,738

(19.9)

19,753

(53.2)