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Table 1 Descriptive statistics of the study participants

From: Tracking of anthropometric characteristics from childhood to adolescence: an 8-year follow-up findings from the Czech ELSPAC study

Study variables Year 8 Year 11 Year 13 Year 15 p-value
Circumferences Mean (SD) Mean (SD) Mean (SD) Mean (SD)  
 Head (cm) 52.1 (2.3) 53.8 (1.7) 54.4 (2.5) 54.6 (3.8)  < 0.001
 Chest (cm) 62.2 (4.6) 72.1 (6.7) 79.3 (6.8) 84.1 (6.0)  < 0.001
 Waist (cm) 57.9 (5.8) 63.8 (7.2) 69.8 (7.7) 70.5 (6.9)  < 0.001
 Hips (cm) 66.6 (5.1) 77.9 (7.3) 86.5 (8.2) 91.3 (6.6)  < 0.001
 Arm (cm) 19.8 (2.0) 21.9 (2.6) 23.8 (4.3) 25.0 (4.6)  < 0.001
Indices
 Body-mass index (kg/m2) 16.1 (2.0) 17.4 (2.7) 19.1 (2.9) 20.1 (2.6)  < 0.001
 Waist-to-hip ratio 0.87 (0.05) 0.82 (0.05) 0.81 (0.08) 0.78 (0.1)  < 0.001
 Waist-to-height ratio 0.44 (0.04) 0.42 (0.04) 0.43 (0.04) 0.41 (0.04)  < 0.001
Skinfold thicknesses
 Biceps (mm) 7.8 (3.3) 7.3 (3.5) 6.8 (3.8) 5.9 (2.8)  < 0.001
 Triceps (mm) 10.7 (4.6) 11.2 (4.7) 12.4 (5.3) 12.3 (5.1)  < 0.001
 Subscapula (mm) 8.9 (4.9) 9.1 (5.3) 9.2 (5.1) 9.3 (4.2) 0.507
 Suprailiaca (mm) 9.9 (5.8) 9.3 (6.0) 8.7 (5.6) 8.1 (4.5)  < 0.001
 Thigh (mm) 20.5 (8.6) 20.2 (8.1) 19.6 (9.1) 19.8 (9.7) 0.416
 Sum5skinfolds (mm) 57.8 (24.4) 57.1 (23.4) 56.7 (25.0) 55.4 (24.2) 0.163