Table 2 Productivity figures for each section by the language reference standard and each section in combination

Section 1 Developmental milestones

0·88

0·55

1·93

0·23

0·18

0·98

Section 2 Word list

0·85

0·84

5·18

0·17

0·37

0·98

Section 3 Population risk factors

0·7

0·59

1·70

0·51

0·16

0·95

Section 4 Professional observations

0·91

0·65

2·62

0·14

0·23

0·98

Section 5 Parental concerns

0·73

0·74

2·85

0·36

0·24

0·96

Combinations of 2 sections

Sections 1 & 2

0·93

0·54

2·02

0·13

0·18

0·99

Sections 1 & 3

0·94

0·36

1·46

0·16

0·14

0·98

Sections 1 & 4

0·97

0·44

1·71

0·08

0·16

0·99

Sections 1 & 5

0·88

0·49

1·73

0·25

0·16

0·97

Sections 2 & 3

0·96

0·52

1·99

0·09

0·18

0·99

Sections 2 & 4

0·98

0·63

2·62

0·04

0·23

> 0·99

Sections 2 & 5

0·89

0·7

2·96

0·16

0·25

0·98

Sections 3 & 4

0·96

0·4

1·58

0·11

0·15

0·99

Sections 3 & 5

0·89

0·47

1·66

0·24

0·16

0·97

Sections 4 & 5

0·93

0·56

2·14

0·12

0·19

0·99

Combinations of 3 sections

Sections 1,2 & 3

0·97

0·35

1·49

0·10

0·14

0·99

Sections 1,2 & 4

0·99

0·43

1·74

0·03

0·16

> 0·99

Sections 1,2 & 5

0·93

0·49

1·83

0·14

0·17

0·98

Sections 1,3 & 4

0·98

0·29

1·37

0·08

0·13

0·99

Sections 1,3 & 5

0·94

0·33

1·41

0·17

0·14

0·98

Sections 2,3 & 4

0·99

0·38

1·61

0·03

0·15

> 0·99

Sections 2,3 & 5

0·96

0·44

1·70

0·10

0·16

0·99

Sections 2,4 & 5

0·98

0·55

2·19

0·04

0·2

> 0·99

Sections 3,4 & 5

0·97

0·36

1·51

0·09

0·14

0·99

Combinations of 4 sections

Sections 1,2,3 & 4

0·99

0·28

1·38

0·04

0·13

> 0·99

Sections 1,2,3 & 5

0·97

0·33

1·43

0·10

0·14

0·99

Sections 1,2,4 & 5

0·99

0·4

1·64

0·03

0·15

1·00

Sections 1,3,4 & 5

0·98

0·27

1·33

0·08

0·13

0·99

Sections 2,3,4 & 5

0·99

0·35

1·52

0·03

0·14

> 0·99