Table 4 Primary analyses repeated using categorical measures of maternal circulating total 25(OH)D (nmol/L) in pregnancy

Autism diagnosis ^a

Unadjusted

Deficient

0.76

(0.18, 3.17)

0.93

(0.37, 2.33)

Insufficient

1.20

(0.71, 2.04)

0.94

(0.36, 2.43)

Fully adjusted

Deficient

0.91

(0.22, 3.83)

0.79

(0.31, 1.99)

Insufficient

1.28

(0.75, 2.19)

0.85

(0.33, 2.22)

Social communication trait ^a

Unadjusted

Deficient

1.18

(0.76, 1.82)

0.93

(0.66, 1.32)

Insufficient

1.11

(0.91, 1.35)

1.01

(0.71, 1.42)

Fully adjusted

Deficient

1.14

(0.73, 1.78)

1.00

(0.70, 1.41)

Insufficient

1.08

(0.88, 1.31)

1.02

(0.72, 1.45)

Speech coherence trait ^a

Unadjusted

Deficient

1.15

(0.71, 1.88)

0.95

(0.67, 1.34)

Insufficient

1.31

(1.06, 1.60)

1.07

(0.76, 1.51)

Fully adjusted

Deficient

1.17

(0.71, 1.92)

0.96

(0.68, 1.36)

Insufficient

1.31

(1.06, 1.61)

1.07

(0.75, 1.51)

Repetitive behaviours trait^a

Unadjusted

Deficient

1.32

(0.92, 1.91)

0.83

(0.64, 1.09)

Insufficient

1.18

(1.00, 1.39)

0.97

(0.74, 1.28)

Fully adjusted

Deficient

1.30

(0.90, 1.88)

0.86

(0.66, 1.13)

Insufficient

1.17

(0.99, 1.38)

0.97

(0.74, 1.28)

Sociability temperament trait^a

Unadjusted

Deficient

0.60

(0.32, 1.11)

1.14

(0.75, 1.72)

Insufficient

1.12

(0.91, 1.39)

1.23

(0.80, 1.87)

Fully adjusted

Deficient

0.61

(0.32, 1.14)

1.14

(0.75, 1.72)

Insufficient

1.15

(0.93, 1.43)

1.23

(0.80, 1.88)

Autism factor mean score^b

Unadjusted

Deficient

0.03

(−0.10, 0.16)

−0.08

(−0.19, 0.03)

Insufficient

0.10

(0.04, 0.15)

0.00

(−0.12, 0.11)

Fully adjusted

Deficient

0.05

(−0.08, 0.17)

−0.09

(−0.19, 0.02)

Insufficient

0.09

(0.04, 0.15)

−0.02

(−0.13, 0.09)