Table 1 Descriptive statistics for RP-biorhythm and growth measures.

From: Dental biorhythm is associated with adolescent weight gain

Participants

 

Retzius periodicity

Starting age

Maturation stagea

Gains

Ending

Gain

 

n

mode

mean

yrs

1.

pre

2.

early

3.

peak

4.

late

Weight

kg

Height

cm

Leg

cm

BMI

percentile

BMI

kg/m2

All

61

6

7.26 ±1.31

10.33 ± 0.57

9

20

27

3

6.33 ± 2.79

6.92 ± 1.39

2.37 ± 0.57

69.06 ± 25.44

1.13 ± 1.04

Femaleb

34

8

7.50 ± 1.33

10.30  ± 0.59

1

2

26

3

6.97 ± 2.82

7.39 ± 1.55

2.41 ± 0.47

69.19 ± 25.64

1.31 ± 1.06

Male

27

6

6.96 ± 1.25

10.36  ± 0.56

8

18

1

0

5.56 ± 2.60

6.37 ± 0.92

2.32 ± 0.67

68.91 ± 25.69

0.95 ± 1.01

  1. aDetermined from longitudinal measurements of height and weight modelled using fixed bandwidth kernel weighted robust third-degree polynomial regression smoothing.
  2. bWe were unable to assign a maturation stage to two females.
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