Table 1 Core data by PLS-5 centile threshold
Typical language | Low language | T test, Mann Whitney or Chi squared tests | |||
|---|---|---|---|---|---|
> 10th centile | <=10th centile | Full sample | |||
N = 273 | N = 89 | N = 362 | |||
Birthweight (kg) | |||||
Missing, N (%) | 5 (1·83) | 4 (4·49) | 9 (2·5) | ||
Mean (SD) | 3·39 (0·54) | 3·27 (0·85) | 3·37 (0·63) | t (351) = 1.28, p = .204 | |
Length of pregnancy (weeks) | |||||
Missing, N (%) | 8 (2·93) | 1 (1·12) | 9 (2·5) | ||
Mean (SD) 1 | 39·11 (1·62) | 38·63 (2·13) | 38·99 (1·77) | t (351) = 1.94, p = .055 | |
Age at PLS-5 assessment (months)*** | |||||
Missing, N (%) | 13 (4·76) | 1 (1·12) | 14 (3·9) | ||
Mean (SD) | 26·09 (1·46) | 25·00 (1·63) | 25·82 (1·58) | t (346) = 5.89, p < .0.001 | |
Age at ELIM assessment (months) | |||||
Missing, N (%) | 24 (8·79) | 9 (10·11) | 33 (9·1) | ||
Mean (SD) | 19·79 (3·33) | 19·71 (4·33) | 19·77 (3·59) | t (327) = 0.14, p = .89 | |
IDACI Decile *** | Missing, N (%) | 10 (3·66) | 8 (8·99) | 18 (5·0) | |
Median (IQR)3 | 5·00 (4·0) | 3·00 (2·50) | 5·00 (4·00) | U = 7628, p < .001 | |
Sex** | |||||
Missing, N (%) | 4 (1·4) | 0 (0) | 4 (1·1) | ||
Female | N (%) | 134 (49·8) | 30 (33·7) | 164 (45·8) | |
Male | N (%) | 135 (50·2) | 59 (66·3) | 194 (54·2) | X2 (1,358) = 6.99, p = .01 |
Languages spoken in the home | |||||
Missing, N (%) | 34 (12·4) | 12 (13·5) | 46 (12·7) | ||
English only | N (%) | 205 (85·8) | 46 (59·7) | 251 (79·4) | |
Primary language other than English | N (%) | 15 (6·3) | 17 (22·1) | 32 (10·1 | |
Use English and another language equally | N (%) | 19 (7·9) | 14 (18·2) | 33 (10·4) | X2 (2,316) = 25.17, p < .001 |