Table 3 Confirmatory factor analysis of the English version of the TOY8 developmental screening tool

Gross motor (four-factor model:

manipulation, stationary skills- balancing, locomotion- staircase, and locomotion)

64.291

38

1.692

0.978

0.961

0.958

0.957

0.037

0.369

< 0.001

Fine motor (one-factor model)

34.025

17

2.001

0.983

0.964

0.936

0.961

0.045

0.0565

< 0.001

Language (four- factor model: receptive, expressive, preposition, and color naming)

712.466

441

1.616

0.919

0.903

0.935

0.942

0.035

0.0470

< 0.001

Cognitive (three- factor model: sequence; matching size and color; memory)

117.532

83

1.416

0.969

0.956

0.953

0.963

0.029

0.0413

< 0.001

Personal social (two-factor model: personal hygiene and social skills)

78.617

48

1.638

0.971

0.953

0.932

0.951

0.039

0.0399

< 0.001

4-years-old (n = 648)

Gross motor (one-factor model: locomotion and balancing)

42.074

25

1.683

0.985

0.974

0.939

0.958

0.032

0.0336

< 0.001

Fine motor (one-factor model)

52.762

25

2.110

0.982

0.967

0.954

0.968

0.041

0.0353

< 0.001

Language: (five-factor model: expressive, prepositive, object function, color naming, and practical reasoning)

802.143

451

1.779

0.928

0.916

0.947

0.952

0.035

0.0432

< 0.001

Cognitive (six-factor mode: lego, arithmetic, identify alphabet, matching size, color and shape, spatial orientation and discrimination, and memory)

634.120

432

1.468

0.942

0.929

0.944

0.951

0.027

0.0397

< 0.001

Personal social (two-factor model: personal hygiene and social skill)

17.941

10

1.794

0.992

0.979

0.972

0.987

0.035

0.0215

< 0.001

5-years-old (nn = 620)

Gross motor (one-factor model)

12.071

4

3.018

0.992

0.972

0.939

0.976

0.057

0.0289

< 0.001

Fine motor (one-factor model)

5.867

34

1.555

0.983

0.973

0.944

0.958

0.030

0.0336

< 0.001

Language (three-factor model: expressive, receptive, and analogy)

3780.647

219

1.692

0.950

0.937

0.947

0.954

0.033

0.0370

< 0.001

Cognitive (three-factor model: arithmetic, matching block design, and memory)

161.245

124

1.300

0.972

0.962

0.934

0.947

0.022

0.0354

< 0.001

Personal social (two-factor model: personal hygiene and social skills)

25.706

10

2.571

0.989

0.9668

0.938

0.971

0.050

0.0310

< 0.001