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Table 1 Means and ranges of anthropometric measures and physical activity level and the distributions of subjects by smoking class

From: Body mass index is associated with lumbar disc degeneration in young Finnish males: subsample of Northern Finland birth cohort study 1986

  Males Females Both sexes  
  Means (ranges) of anthropometric measures and physical activity No. of valid observations
BMI 16 yr (kg/m2) 21.2 (15.6–33.0) 20.7 (14.5–35.8) 20.9 (14.5–35.8) 550
BMI 19 yr (kg/m2) 23.8 (16.0–38.1) 22.1 (15.8–39.9) 22.8 (15.8–39.9) 558
Weight 16 yr (kg) 65.6 (45.2–112.1) 55.8 (37.5–94.0) 59.9 (37.5–112.1) 550
Weight 19 yr (kg) 75.7 (52.5–123.6) 59.8 (39.9–114.1) 66.4 (39.9–123.6) 558
Height 16 yr (cm) 175.6 (158.2–196.2) 164.1 (134.7–179.2) 168.9 (134.7–196.2) 550
Height 19 yr (cm) 178.3 (158.5-201.0) 164.3 (145.0-179.0) 170.1 (145.0-201.0) 558
Waist circumference 16 yr (cm) 75.9 (62.5-108.1) 70.4 (59.5-100.5) 72.7 (59.5-108.1) 537
Waist circumference 19 yr (cm) 81.8 (62.5-121.0) 72.3 (59.0-118.5) 76.3 (59.0-121.0) 556
Physical activity level (MET hours/week#) 34.6 (4.0-76.0) 29.6 (2.8-64.3) 31.7 (2.8-76.0) 555
  Distributions of subjects by smoking class  
Smoking (pack- years*) at 19 yr No. (%) No. (%) No. (%)  
None 177 (76) 239 (74) 416 (75)  
0.01–3.99 37 (16) 67 (21) 104 (19)  
≥4.00 19 (8) 19 (6) 38 (7)  
  1. # Metabolic equivalent (MET) hours per week calculated from physical activity level outside school hours.
  2. * Years of smoking multiplied by the packs of cigarettes smoked daily.