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Table 1 Characteristic of Study Samples

From: A comparative study of bronchodilator response: utilizing pre-bronchodilator versus predicted normal values

 

All Patients

ΔFEV1 > 0.0 L

ΔFEV1 ≥ 0.2 L

ΔFVC > 0.0 L

Pre-FEV1 > 80%

Pre-FVC > 80%

N

1637

1040

213

928

462

Age*

59.7

(16.2)

59.2

(16.2)

55.9

(16.9)

59.3

(16.4)

55.1

(17.4)

Male sex

787

(48.1%)

503

(48.4%)

141

(66.2%)

452

(48.7%)

182

(39.4%)

Race

          

Hispanic

814

(49.7%)

510

(49.0%)

99

(46.5%)

264

(28.5%)

218

(47.2%)

White

475

(29.0%)

308

(29.6%)

76

(35.7%)

464

(50.0%)

143

(31.0%)

Black

312

(19.1%)

197

(18.9%)

35

(16.4%)

180

(19.4%)

94

(20.4%)

Other

36

(2.2%)

25

(2.4%)

3

(1.4%)

20

(2.2%)

7

(1.5%)

FEV1, L*

1.9

(0.8)

1.9

(0.8)

2.3

(0.9)

1.9

(0.8)

2.7

(0.8)

FVC, L*

2.8

(1.1)

2.8

(1.1)

3.4

(1.2)

2.7

(1.0)

3.5

(1.0)

FEV1/FVC%*

69.1

(14.5)

68.8

(14.6)

66.8

(13.2)

68.6

(15.0)

76.8

(7.6)

  1. * Values represent mean (SD)