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Table 3 Crude and adjusted analyses of sedentary behavior trajectory from 11 to 18 years of age and pulmonary function parameters at 18 years of age by sex

From: Screen-based sedentary behavior during adolescence and pulmonary function in a birth cohort

 

Male

Female

Crudea

Adjustedb

Crudea

Adjustedb

β (95% CI)

p

β (95% CI)

p

β (95% CI)

p

β (95% CI)

p

FEV1 at 18 years (z-score)

 Sedentary behavior

  Always high

Ref

 

Ref

 

Ref

 

Ref

 

  Always moderate

−0.088 (−0.201;0.025)

0.126

−0.003 (−0.091;0.085)

0.953

−0.051 (−0.137;0.035)

0.245

−0.021 (−0.080;0.039)

0.494

  Always low

−0.233 (−0.457;-0.008)

0.042

0.081 (−0.097;0.260)

0.373

−0.039 (−0.204;0.126)

0.645

−0.005 (−0.119;0.109)

0.928

FVC at 18 years (z-score)

 Sedentary behavior

  Always high

Ref

 

Ref

 

Ref

 

Ref

 

  Always moderate

−0.097 (−0.209;0.015)

0.088

−0.001 (−0.075;0.073)

0.980

−0.015 (−0.102;0.072)

0.742

0.012 (−0.048;0.073)

0.690

  Always low

−0.159 (−0.381;0.062)

0.159

0.177 (0.027;0.327)

0.021

−0.050 (−0.217;0.117)

0.560

−0.017 (−0.132;0.099)

0.777

PEF at 18 years (z-score)

 Sedentary behavior

  Always high

Ref

 

Ref

 

Ref

 

Ref

 

  Always moderate

−0.180 (−0.293;-0.068)

0.002

−0.091 (−0.193;0.012)

0.083

−0.002 (−0.088;0.084)

0.936

0.016 (−0.060;0.092)

0.675

  Always low

−0.366 (−0.588;-0.144)

0.001

−0.162 (−0.369;0.046)

0.127

0.150 (−0.016;0.316)

0.076

0.110 (−0.035;0.255)

0.137

  1. FEV1: forced expiratory volume in 1 s; FVC: forced vital capacity; PEF: peak expiratory flow
  2. aCrude analyses – male: n = 1640; female: n = 1742
  3. bAdjusted for skin color, family income at birth, maternal schooling at birth, birth weight, smoking during pregnancy, mother’s height at birth, pulmonary function parameter at 15 years, body mass index at 11 and 15 years, Tanner stage at 15 years, leisure-time physical activity at 11 and 15 years, height at 18 years, wheezing in the previous year at 18 years, and corticoids in the previous 3 months at 18 years (male: n = 1243; female: n = 1389)