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Table 1 Maternal and infant characteristics of responders and non-responders to 2-year neurodevelopmental follow-up

From: Telephone interviews and online questionnaires can be used to improve neurodevelopmental follow-up rates

Characteristic

Responders

Non-responders

RR [95% CI] for non-responder

p

Maternal characteristics

(n = 1292)

(n = 844)

  

Age, mean (SD)

30.6 (5.6)

28.0 (6.0)

0.95 [0.95 to 0.96]

<0.001

Non-white ethnic group, n (%)

250 (19.4)

279 (33.1)

1.50 [1.35 to 1.67]

<0.001

Non-English first language, n (%)

165 (13.0)

161 (19.5)

1.32 [1.16 to 1.50]

<0.001

Unsupported mother, n (%)

127 (9.8)

194 (23.0)

1.69 [1.51 to 1.88]

<0.001

Highest educational qualification, n (%)

    

None or secondary education

415 (32.6)

448 (55.1)

Baseline

-

Tertiary education

760 (59.6)

296 (36.4)

0.54 [0.48 to 0.61]

<0.001

Other

99 (7.8)

69 (8.5)

0.80 [0.65 to 0.96]

0.02

Occupational status, n (%)a

    

Managerial, professional or intermediate

742 (57.9)

269 (32.0)

Baseline

 

Semi-routine or routine

184 (14.4)

137 (16.3)

1.60 [1.36 to 1.89]

<0.001

No occupation

355 (27.7)

436 (51.7)

2.07 [1.84 to 2.34]

<0.001

Difficult financial situation, n (%)

80 (6.2)

74 (8.8)

1.24 [1.04 to 1.47]

0.02

Poor mental health, n (%)

141 (11.0)

119 (14.1)

1.18 [1.02 to 1.37]

0.02

Poor general health, n (%)

83 (6.4)

87 (10.3)

1.33 [1.14 to 1.56]

<0.001

Infant characteristics

(n = 1422)

(n = 954)

  

Late/moderately preterm, n (%)b

651 (45.8)

472 (49.5)

1.09 [0.99 to 1.21]

0.08

Birthweight, n (%)

    

Low birthweight (1501-2500 g)

404 (28.4)

298 (31.2)

1.08 [0.98 to 1.20]

0.13

Very low birthweight (≤1500 g)

18 (1.3)

13 (1.4)

1.07 [0.70 to 1.63]

0.75

Fetal growth restriction, n (%)c

273 (19.2)

213 (22.3)

1.12 [1.00 to 1.25]

0.06

Multiple birth, n (%)

262 (18.4)

219 (23.0)

1.17 [1.05 to 1.31]

0.005

Any respiratory support, n (%)d

100 (7.0)

57 (6.0)

0.90 [0.73 to 1.11]

0.32

Intra-cranial abnormality, n (%)e

12 (0.8)

7 (0.7)

0.92 [0.51 to 1.66]

0.77

Major congenital anomaly, n (%)

16 (1.1)

13 (1.4)

1.12 [0.74 to 1.68]

0.60

Any breast milk at discharge, n (%)f

1001 (70.4)

519 (54.4)

0.67 [0.61 to 0.74]

<0.001

  1. aClassified using UK National Statistics Socio-Economic Classification (NS-SEC). bLate and moderately preterm is birth at 32-36 completed weeks of gestation. cFetal growth restriction calculated using customised antenatal growth charts [21]. dAny respiratory support includes infants who were ventilated or received non-invasive respiratory support. eIntra-cranial abnormality includes Grade III or IV intra-ventricular haemorrhage (IVH), periventricular leukomalacia (PVL) and Grade II or III neonatal encephalopathy. fIncludes breast milk fed by any method.
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BMC Research Notes

ISSN: 1756-0500

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