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Table 3 Characteristics of mothers and children at 6, 12, 18 months with PEDS outcome data collection at each follow-up compared to those who did not have outcome data collected (participant vs non-participant)

From: Who is our cohort: recruitment, representativeness, baseline risk and retention in the “Watch Me Grow” study?

Characteristic Baseline- birth N = 2013 n (%) 6 months with PEDS data N = 792 n (%) 12 months with PEDS data N = 649 n (%) 18 months with PEDS data N = 565 n (%)
Child Level     
Male gender 964 (48.0) 344 (46.5) 281 (46.1) 244 (44.9)
Low birth weight (<2500 g) 151 (7.5) 49 (6.6) 45 (7.4) 38 (7.0)
Preterm (<37 weeks) 180 (9) 57 (7.7) 57 (9.3) 51 (9.4)
Admitted SCHN/NICU 301 (15) 102 (13.8) 94 (15.4) 86 (15.8)
Parents     
Maternal age < 20 years 48 (2.4) 10 (1.4) p = .02 9 (1.5) 8 (1.5)
Maternal smoking in pregnancy 88 (5.2) 23 (3.7) = 0.03 15 (2.9) p = .005 11 (2.4) p = .001
Maternal alcohol during pregnancy 23 (1.3) 7 (1.0) 8 (1.4) 6 (1.2)
Antenatal health problems 640 (32.4) 230 (31.2) 196 (32.5) 182 (33.8)
Mother experienced child abuse as a child 128 (7.5) 45 (7.0) 41 (7.7) 34 (7.0)
Poor maternal mental health (EDS >12) 121 (7.3) 36 (6.0) 25 (5.1) 29 (6.5)
Mother did not complete high school 316 (18.5) 110 (14.5) p < 001 90 (14.4) p = .001 81 (14.6) p = .005
Family     
English not primary language on antenatal visit 463 (23.0) 167 (22.6) 147 (24.1) 128 (23.6)
Mother Australian nationality 846 (42.5) 323 (43.6) 271 (44.4) 233 (42.9)
Mother Middle Eastern or Asian nationality 848 (42.2) 307 (41.5) 249 (40.8) 226 (41.6)
Annual income at birth < AUD25001 277 (17.6) 94 (13.2) p < 001 75 (12.9) p < 001 60 (11.8) p < 001
Mother has no partner at antenatal check 74 (4.0) 16 (2.4) p = .004 14 (2.5) p = .02 14 (2.8)
Hit, slapped, hurt by partner in last year 19 (1.1) 7 (1.1) 6 (1.1) 4 (0.8)
A child already in out-of-home care 42 (2.7) 9 (1.4) p = .01 3 (0.6) p < 001 2 (0.4) p < 001
Neighbourhood     
SEIFA decile 1 872 (44.2) 274 (37.3) p < 001 221 (36.5) p < 001 200 (37.0) p < 001