Skip to main content

Table 1 Characteristics of subsample with lung function measurements and the total Isle of Wight (IOW) cohort

From: Effect of GSTM2-5polymorphisms in relation to tobacco smoke exposures on lung function growth: a birth cohort study

 

Subsample with lung function measurements (n=1121)

Total cohort (n=1536)

 

Variables

N

%

N

%

p-value

Gender

     

  Males

557

49.7

786

51.2

0.45

  Females

564

50.3

750

48.8

 

  Missing

0

 

0

  

In utero smoke exposure

     

  Yes

253

22.7

384

25.2

0.12

  No

864

77.4

1137

74.8

 

  Missing

419

 

15

  

SHS smoke exposure at age 10

     

  Yes

508

45.3

848

56.7

0.26

  No

609

54.3

647

43.3

 

  Missing

419

 

41

  

SHS smoke exposure at age 18

     

  Yes

563

55.2

716

56.7

0.49

  No

457

44.8

548

43.3

 

  Missing

516

 

272

  

Active smoking at age 18

     

  Yes

276

26.9

368

28.8

0.30

  No

752

73.2

910

71.2

 

  Missing

508

 

258

  
 

Median (5th percentile, 95th percentile); n

 

Height at age 10 (cm)

138.7 (129.1, 149.5); 1026

138.7 (129.1, 149.5); 1043

0.98

Missing

510

493

 

Height at age 18 (cm)

171.0 (156.5, 186.5); 918

171.0 (156.5, 187.0); 994

0.64

Missing

618

542

 

BMI at age 10 (kg/m2)

17.4 (14.7, 24.1); 1026

17.4 (14.7, 23.9); 1043

0.92

Missing

510

493

 

BMI at age 18 (kg/m2)

22.2 (18.2, 32.2); 896

22.2 (18.2, 32.2); 964

0.91

Missing

640

572

 
  1. SHS Secondhand smoke, BMI Body Mass Index.