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Table 1 Descriptive statistics among men and women from Malmo Preventive Project (MPP)

From: Can birth weight predict offspring’s lung function in adult age? Evidence from two Swedish birth cohorts

 

Total population

(N = 3495)

Men

(N = 3330)

Women

(N = 165)

Age (years)

46.4 ± 5.4

46.4 ± 5.3

49.4 ± 7.2

Birth characteristics

 Birth weight (gram)

3529.6 ± 547.2

3537.3 ± 546

3373.8 ± 549.6

 Birth weight (z-score)

0.11 ± 2.9

0.13 ± 2.9

− 0.15 ± 1.3

 Birth length (cm)

51.6 ± 2.5

51.6 ± 2.5

51.5 ± 2.9

 Gestational age (days)

279 ± 16

279.3 ± 16.4

275.2 ± 13.8

Education n (%)

 Primary school

746 (21.5)

702 (43.2)

44 (39.6)

 Secondary school

423 (12.2)

403 (24.8)

20 (18.1)

 Higher level

568 (16.3)

521 (32)

47 (42.3)

 Missing

1738 (50)

  

History of smoking n (%)

 Yes

1494 (42.7)

1442 (43.3)

52 (33.8)

 No

1990 (56.9)

1888 (56.7)

102 (66.2)

 Missing

11(0.3)

0

11

Adult antropometry

 Body mass index (kg/m2)

24.8 ± 3.2

24.8 ± 3.2

24.1 ± 4.6

Lung function spirometry

 FEV1 (l per 1 s)

3.4 ± 0.7

3.4 ± 0.7

2.7 ± 0.5

 FEV1 (z-score)

− 1.07 ± 1.2

− 1.07 ± 1.2

− 0.6 ± 1.2

 FVC(l)

4.4 ± 0.9

4.5 ± 0.9

3.4 ± 0.6

 FVC (z-score)

− 0.88 ± 1.2

− 0.88 ± 1.2

− 0.7 ± 1.1

 FEV1/FVC (%)

76.9 ± 8.8

76.8 ± 8.8

81.4 ± 8.7

 FEV1/FVC (z-score)

− 0.37 ± 1.3

− 0.38 ± 1.3

0.18 ± 1.4

  1. Mean (SD) and proportions; frequency and percentage. FEV1- forced expiratory volume in one second; FVC- forced vital capacity; FEV1/FVC- ratio of FEV1 by FVC