Table 1.
Characteristics of Children in Each Latent Class with Complete Outcomes (n=1444)
| Normal (n=1135), n (%) |
Language Deficit (n=96), n (%) |
Behavior Deficit (n=151), n (%) |
Severe Deficit (n=62), n (%) |
|
|---|---|---|---|---|
| Gender | ||||
| Girls | 579 (51) | 33 (34.4) | 55 (36.4) | 26 (41.9) |
| Boys | 556 (49) | 63 (65.6) | 96 (63.6) | 36 (58.1) |
| Birth Weight | ||||
| < 1500g | 18 (1.6) | 0 (0) | 2 (1.3) | 3 (4.8) |
| 1500 – 1999g | 17 (1.5) | 2 (2.1) | 7 (4.6) | 0 (0) |
| 2000 – 2499g | 58 (5.1) | 7 (7.3) | 9 (6) | 5 (8.1) |
| 2500 – 2999g | 181 (15.9) | 18 (18.8) | 23 (15.2) | 6 (9.7) |
| 3000 – 3999g | 745 (65.6) | 58 (60.4) | 97 (64.2) | 43 (69.4) |
| ≥ 4000g | 116 (10.2) | 11 (11.5) | 13 (8.6) | 5 (8.1) |
| Apgar at 5 minutes | ||||
| 0 – 6 | 16 (1.4) | 0 (0) | 2 (1.3) | 2 (3.2) |
| 7 – 10 | 1114 (98.1) | 96 (100) | 148 (98) | 60 (96.8) |
| Unknown | 5 (0.4) | 0 (0) | 1 (0.7) | 0 (0) |
| Race | ||||
| Caucasian | 1007 (88.7) | 84 (87.5) | 135 (89.4) | 55 (88.7) |
| Non-Caucasian | 108 (9.5) | 8 (8.3) | 12 (7.9) | 5 (8.1) |
| Unknown | 20 (1.8) | 4 (4.2) | 4 (2.6) | 2 (3.2) |
| Household Income (AUD) | ||||
| Less than $7000 | 53 (4.7) | 11 (11.5) | 11 (7.3) | 9 (14.5) |
| $7000-$23999 | 290 (25.6) | 40 (41.7) | 65 (43) | 21 (33.9) |
| $24000 – $35999 | 292 (25.7) | 26 (27.1) | 33 (21.9) | 14 (22.6) |
| $36,000 | 433 (38.1) | 10 (10.4) | 32 (21.2) | 11 (17.7) |
| Unknown | 67 (5.9) | 9 (9.4) | 10 (6.6) | 7 (11.3) |
| Father Living at Home | ||||
| Home | 1011 (89.1) | 77 (80.2) | 127 (84.1) | 50 (80.6) |
| Not at home | 97 (8.5) | 15 (15.6) | 20 (13.2) | 10 (16.1) |
| Unknown | 27 (2.4) | 4 (4.2) | 4 (2.6) | 2 (3.2) |
| Maternal Education Beyond High School | ||||
| None | 499 (44) | 58 (60.4) | 84 (55.6) | 46 (74.2) |
| Trade certificate, Professional registration or other | 273 (24.1) | 21 (21.9) | 32 (21.2) | 7 (11.3) |
| College or University degree | 343 (30.2) | 13 (13.5) | 31 (20.5) | 7 (11.3) |
| Unknown | 20 (1.8) | 4 (4.2) | 4 (2.6) | 2 (3.2) |
| Maternal Perinatal Smoking | ||||
| No | 862 (75.9) | 63 (65.6) | 101 (66.9) | 36 (58.1) |
| 1–20 daily | 166 (14.6) | 19 (19.8) | 37 (24.5) | 14 (22.6) |
| 21 or more daily | 17 (1.5) | 5 (5.2) | 2 (1.3) | 3 (4.8) |
| Unknown | 90 (7.9) | 9 (9.4) | 11 (7.3) | 9 (14.5) |
| Maternal Perinatal Alcohol Use | ||||
| Several times per week | 67 (5.9) | 3 (3.1) | 4 (2.6) | 3 (4.8) |
| Once a week | 114 (10) | 9 (9.4) | 11 (7.3) | 2 (3.2) |
| Less than once a week | 256 (22.6) | 20 (20.8) | 33 (21.9) | 8 (12.9) |
| Never | 600 (52.9) | 54 (56.3) | 90 (59.6) | 38 (61.3) |
| Unknown | 90 (7.9) | 10 (10.4) | 13 (8.6) | 11 (17.7) |
|
| ||||
| Surgical Exposure Before Age 3 | ||||
| 0 | 1002 (88.3) | 71 (74) | 129 (85.4) | 54 (87.1) |
| 1 | 133 (11.7) | 25 (26) | 22 (14.6) | 8 (12.9) |
*
Because of rounding, percentages may not sum to 100
AUD: Australian Dollar