Convergent validity:
Children with Knee Pathology: (Moutzouri et al, 2021; Greek translation of KOOS-Child)
- Poor to Excellent convergent validity between KOOS-Child and KIDSCREEN subscales
Correlations between KOOS-Child and KIDSCREEN subscales
| KIDSCREEN Subscales |
KOOS-Child Subscales | Physical activities/health | General Feeling | Parents/Free Time | Friends | School |
Pain | 0.6 | 0.5 | - | - | 0.4 |
Symptoms | 0.7 | 0.3 | - | - | 0.5 |
ADL | 0.5 | 0.4 | 0.4 | 0.3 | 0.3 |
Sport-play | 0.5 | 0.4 | - | 0.4 | 0.3 |
QoL | 0.5 | 0.6 | 0.5 | 0.4 | 0.4 |
Note: p < 0.01 for all correlations
- Poor to Excellent convergent validity between KOOS-Child and Kid-KINDL subscales
Correlations between KOOS-Child and Kid-KINDL subscales
| Kid-KINDL Subscales |
KOOS-Child Subscales | Physical Health | General Feeling | Self | Family | Friends | School | Hospital/Disease |
Pain | 0.5 | 0.5 | - | - | - | - | 0.3 (ns) |
Symptoms | 0.6 | 0.5 | - | - | - | - | 0.4* |
ADL | 0.6 | 0.5 | - | - | - | - | - |
Sport-play | 0.6 | 0.4 | -0.6 (ns) | - | - | - | - |
QoL | 0.6 | 0.6 | 0.1 (ns) | 0.2 (ns) | 0.6* | 0.3 | 0.3 (ns) |
Note: All correlations significant at p < 0.01 except where noted: ns = not significant (p>0.05) and * = significant at p < 0.05
Children with Stable Knee Conditions: (Van der Velden, 2019)
Adequate to Excellent convergent validity between KOOS-Child and other scales
| KOOS Symptoms | KOOS Pain | KOOS ADL | KOOS Sport/play | KOOS QoL |
Pedi-IKDC | 0.69 | 0.84 | 0.83 | 0.80 | 0.76 |
Lysholm | 0.70 | 0.71 | 0.66 | 0.56 | 0.57 |
NRS Pain | -0.44 | -0.71 | -0.62 | -0.54 | -0.52 |
EQ_5D | 0.42 | 0.52 | 0.50 | 0.45 | 0.53 |
Patients with Knee Pain: (Rioux Trottier et al, 2018; French translation of KOOS-Child)
- Poor correlation between KOOS-Child subscales and CHAQ grip subscales (pain = -0.023; symptom = 0.110; ADL = -0.102; sport/play = -0.091; QoL = 0.132)
- Excellent correlation between KOOS-Child pain subscale and CHAQ pain subscale (-0.792)
- Excellent correlation between KOOS-Child sport/play subscale and CHAQ run and play subscale (-0.809)
- Excellent correlation between KOOS-Child ADL subscale and CHAQ walking subscale (-0.782)
- Adequate correlation between KOOS-Child symptoms subscale and VAS (-0.507)
- Excellent correlation between KOOS-Child pain, ADL, sport/play and QoL subscales and VAS (pain = -0.601; ADL = -0.646; sport/play = -0.604; QoL = -0.622)
- Excellent correlation between KOOS-Child QoL subscale and EQ-5D-Y usual activities subscale (-0.788)