Table 2

Characteristics of children with neurodevelopmental assessments

Probiotic group
(n=337)		Placebo group
(n=327)
Age at assessment, months corrected age, mean (SD)30.7 (8.9)
n=336		30.1 (7.8)
n=325
Weight at assessment, kg mean (SD)12.8 (2.6)
n=328		12.7 (2.1)
n=322
Height at assessment, cm mean (SD)90.4 (7.6)
n=320		89.9 (6.4)
n=311
Head circumference at assessment, cm mean (SD)48.8 (1.9)
n=319		48.9 (2.0)
n=312
Growth: z-scores, mean (SD)n=329n
 Mean (SD)
 Weight
 Height
 Head circumference		n=329
−0.6(1.3)
−0.2(1.3)
−1.2(1.3)		n=321
−0.6(1.3)
−0.2(1.2)
−1.1(1.4)
Sociodemographic variables
 English only spoken at home, n (%)231 (82.5)
n=280		207 (77.2)
n=268
 Two caregivers (nuclear family structure), n (%)236 (87.1)
n=271		220 (87.0)
n=253
 Primary caregiver education, n (%)
  <11 years of schooling
  11–12 years of schooling
  Tertiary		25 (9.3)
111 (41.1)
134 (49.6)
n=270		31 (12.3)
94 (37.2)
128 (50.6)
n=253
 Primary caregiver employment, n (%)
  Full time
  Part time
  Unemployed, pension		183 (67.5)
41 (15.1)
47 (17.3)
n=271		144 (56.9)
60 (23.7)
49 (19.4)
n=253
 Primary income earner, n (%)
  Skilled/professional
  Semiskilled
  Unskilled		141 (52.2)
85 (31.5)
44 (16.3)
n=270		151 (59.7)
63 (24.9)
39 (15.4)
n=253
 Maternal age, n (%)
  >21 years
  18–21 years
  <18 years		264 (97.4)
7 (2.6)
0
n=271		244 (96.4)
8 (3.2)
1 (0.4)
n=253
 SRI score, median (range)2.0 (1.0–3.0)
n=269		2.0 (1.0–4.0)
n=252
 Higher social risk (SRI≥2), n (%)152 (56.5)
n=269		152 (60.3)
n=252

  • SRI, Social Risk Index.38