Table 2 Weight and height modeling: Distribution of parameters a1, b1, c1 and birth weight or length for STORK and STARR infants, by sex, with goodness of fit (RMSE)

WEIGHT

a1

b1

c1

BW (kg)

a1

b1

c1

BW (kg)

Boys

Mean

18.9

885

3.80

3.50

16.0

531

3.40

3.34

sd

11.0

1,175

0.49

0.41

16.3

1,104

0.58

0.50

Median

15.5

567

3.72

3.45

14.1

393

3.40

3.35

IQR

6.89

450

0.67

0.62

5.77

327

0.75

0.63

Range

9.84—72.2

151 – 7,964

2.82—4.81

2.73—4.38

4.34—709

73.1 -56,713

1.04—5.90

1.11—5.41

RMSE (kg) Mean (sd)

0.475 (0.177)

0.467 (0.201)

0.647

0.245 (0.139)

0.222 (0.187)

0.431

Median (IQR)

90% < 

Girls

Mean

34.6

1,608

3.48

3.34

18.1

741

3.28

3.23

sd

108

5,578

0.57

0.48

47.6

2,962

0.54

0.48

Median

16.3

707

3.42

3.39

14.7

499

3.28

3.24

IQR

9.52

540

0.66

0.56

6.77

425

0.68

0.61

Range

7.99—746

117 – 3,8407

1.87—4.87

1.97—4.58

4.53—3,330

33.5—199,562

0.92—6.02

1.10—5.95

RMSE (kg) Mean (sd)

0.459 (0.221)

0.434 (0.324)

0.737

0.221 (0.130)

0.198 (0.171)

0.395

Median (IQR)

90% < 

HEIGHT^a

a1

b1

c1

BL (m)

Boys

Mean

61.4

469

51.1

50.8

sd

15.8

243

2.50

2.58

Median

62.0

502

51.0

50.6

IQR

17.7

266

3.23

3.05

Range

23.6—349

53.7 – 4,761

38.6—59.0

38.1—58.4

RMSE (cm) Mean (sd)

0.962 (0.388)

0.932 (0.532)

0.998

Median (IQR)

90% < 

Girls

Mean

66.1

596

50.3

49.9

sd

27.2

403

2.40

2.52

Median

64.5

547

50.5

50.0

IQR

19.6

320

3.03

3.05

Range

22.7—882

54.0 – 12,557

38.9—57.8

38.6—58.4

RMSE (cm) Mean (sd)

0.933 (0.373)

0.910 (0.495)

0.998

Median (IQR)

90% <