Table 1 Distribution of variables among competent and incompetent children
From: Key factors in children’s competence to consent to clinical research
Total | Competent | Incompetent | Odds ratio | P | |
|---|---|---|---|---|---|
(N = 161) | (n = 100) | (n = 61) | (95 % CI) | ||
Mean age in years (SD) | 10.6 (2.8) | 12.4 (2.4) | 8.9 (1.6) | 2.70 (1.96-3.71)a | <0.001 |
Male gender, N (%) | 76 (47) | 44 (44) | 32 (53) | 0.71 (0.38-1.35) | 0.30 |
IQ, N (%) | |||||
Lowb | 52 (32) | 24 (24) | 28 (46) | 1.00 | - |
Average | 66 (41) | 44 (44) | 22 (36) | 2.33 (1.11-4.93) | 0.03 |
High | 43 (27) | 32 (32) | 11 (18) | 3.39 (1.41 -8.15) | 0.06 |
Disease experience, N (%) | |||||
Lowb | 49 (30) | 31 (31) | 18 (30) | 1.00 | - |
Medium | 74 (46) | 44 (44) | 30 (49) | 0.85 (0.41-1.80) | 0.67 |
High | 38 (24) | 25 (25) | 13 (21) | 1.12 (0.46-2.71) | 0.81 |
SES, N (%) | |||||
Lowb | 18 (11) | 6 (6) | 12 (20) | 1.00 | |
Middle | 76 (47) | 47 (47) | 29 (48) | 3.20 (1.10 - 9.6) | 0.03 |
High | 67 (42) | 47 (47) | 20 (33) | 4.70 (1.55-14.3) | 0.006 |
Ethnicity, N (%) | |||||
Western Europeanc | 91 (56) | 64 (64) | 27 (44) | 1.00 | - |
Othera | 70 (44) | 36 (36) | 34 (56) | 0.45 (0.23-0.86) | 0.02 |
Complexity, N (%) | |||||
Lowb | 36 (22) | 31 (31) | 5 (8) | 1.00 | - |
High | 125 (78) | 69 (69) | 56 (92) | 0.12 (0.07-0.55) | 0.001 |
Risk, N (%) | |||||
Low/moderateb | 145 (90) | 88 (90) | 55 (91) | 1.00 | - |
High | 16 (10) | 10 (10) | 6 (10) | 1.02 (0.35 -2.96) | 0.60 |
Parental competence judgment | |||||
Incompetentb | 34 (21) | 7 (7) | 27 (45) | 1.00 | - |
Competent | 125 (79) | 92 (93) | 33 (55) | 10.8 (4.3-27.0) | <0.001 |
Decision to participate | |||||
No | 62 (39) | 34 (34) | 28 (47) | 1.00 | - |
Yes | 64 (40) | 48 (48) | 16 (27) | 2.5 (1.2-5.3) | 0.02 |
Do not know | 34 (21) | 18 (18) | 16 (27) | 0.9 (0.4-2.1) | 0.86 |