Introduction
Methods
Statistics
Results
Cohort description
Scale description
Feasibility
Factor analysis
Factor | Basic functioning | Eating and digesting | Abnormalities at neurological examination |
---|---|---|---|
3.05 Sitting |
0.926
| ||
3.11 Reaching |
0.916
| ||
3.12 Grasping |
0.901
| ||
1.13 Communicating |
0.871
| ||
3.07 Standing |
0.875
| ||
3.04 Sitting up |
0.867
| ||
2.18 Hypertonia |
0.848
| ||
3.08 Walking |
0.847
| ||
3.06 Standing up |
0.843
| ||
3.02 Head control |
0.831
| ||
3.03 Rolling over |
0.821
| ||
2.20 Rigidity |
0.808
| ||
3.01 Communication |
0.772
| 0.513 | |
1.22a Continence day |
0.592
| ||
1.18 Cognitive |
0.547
| 0.486 | |
2.11 Prox muscle |
0.408
| 0.614 | |
1.11 Swallowing |
0.894
| ||
1.10 Chewing | 0.536 |
0.764
| |
1.14 Vomiting |
0.74
| 0.476 | |
2.01 Growth |
0.507
| −0.405 | |
1.16 Constipation | −0.49
| ||
2.02 Weight | −0.404 |
0.448
| |
2.08 Eye movements | −0.698
| ||
2.16 Tremor | −0.628
| ||
2.13 Hypokinesia | 0.745 |
0.568
| |
1.01 Response |
0.543
| ||
2.19 Hypotonia |
0.525
| ||
2.15 Ataxia | −0.511
| ||
1.23a Strabismus | −0.498
| ||
2.14 Abnormal movement | 0.69 | −0.496
| |
1.12 Hearing | 0.403 |
0.494
| |
2.17 Reflexes |
0.419
| ||
1.22b Continence night | 0.75 | ||
2.07 Strabismus | 0.741 | ||
2.10 Vision | 0.717 | ||
1.02 Exercise | 0.616 | ||
1.09 Infections | |||
1.04 Tired | |||
1.23b Ptosis | |||
1.06 Epilepsy | |||
1.21 Breathing | |||
2.06 Ptosis |
Factor | No. items in factor | Eigenvalues | Explained variance (%) | Explained variance (%; total) | Cronbach’s alpha |
---|---|---|---|---|---|
Basic functioning | 16 | 14.3 | 31.1 | 31.1 | 0.97 |
Eating and digesting | 6 | 5.2 | 14.1 | 45.2 | 0.76 |
Abnormalities at neurological examination | 10 | 4.8 | 12.7 | 57.9 | 0.16 |
Factor | Basic functioning | Eating and digesting | Abnormalities at neurological examination |
---|---|---|---|
Basic functioning | 1.00 | ||
Eating and digesting | 0.47* | 1.00 | |
Abnormalities at neurological examination | 0.42* | 0.13 | 1.00 |
Construct validity
Factor | Mild disease (n = 3) | Severe disease (n = 10) | Difference between patients mild and severe disease | ||
---|---|---|---|---|---|
Median | IQR | Median | IQR |
P value | |
Basic functioning | 0 | (0–0) | 43 | (14–56) | 0.01 |
Eating and digesting | 2 | (0–2) | 10 | (5–16) | 0.08 |
Abnormalities at neurological examination | 3 | (1–3) | 10 | (2–12) | 0.29 |
Factor | IPMDS total | IPMDS Domain 1 | IPMDS Domain 2 | IPMDS Domain 3 | Sum of basic functioning | Sum score of eating and digesting | Sum score of abnormalities at neurological examination |
---|---|---|---|---|---|---|---|
General disease severity (P) |
0.806** | 0.480**
| 0.558**
| 0.725**
| 0.658** | 0.426* | 0.038 |
General disease severity (R) |
0.642** | 0.529**
| 0.744**
| 0.810**
| 0.786** | 0.476** | 0.237* |
Severity of abnormalities at physical examination (R) | 0.853** | 0.536**
|
0.750
**
| 0.839**
| 0.803** | 0.519** |
0.226* |
Functional limitations (P) | 0.665** | 0.500**
| 0.563**
|
0.779
**
|
0.740** | 00.328 | 0.135 |
Functional limitations (R) | 0.817** | 0.573**
| 0.719**
|
0.809
**
|
0.760** | 0.381** | 0.293** |
PEDI total | 0.912** | −0.784**
| −0.773**
| −0.890
**
| −0.904** | −0.668** | −0.283 |
PEDI self-care | −0.916** | −0.767**
| −0.767**
| −0.881**
| −0.882** | −0.684** | −0.263 |
PEDI mobility | −0.918** | −0.749**
| −0.797**
| −0.917**
| −0.901** | −0.588** | −0.243 |
PEDI social function | −0.673** | −0.750**
| −0.569**
| −0.662**
| −0.713** | −0.552** | −0.297 |
NPMDS total |
0.840** | 0.475**
| 0.771**
| 0.836**
| 0.816** | 0.572** | 0.183 |
NPMDS Section 1 | 0.887** | 0.512**
| 0.777**
| 0.865**
| 0.882** | 0.606** | 0.27 |
NPMDS Section 2 | −00.144 | −0.172 | −0.117 | 0.100 | 00.029 | −00.133 | −0.146 |
NPMDS Section 3 | 0.854** | 0.597**
| 0.855**
| 0.773**
| 0.657** | 0.676** | 0.196 |
IPMDS total | 1.000 | 0.836** | 0.929** | 0.907** |
0.884** |
0.557** |
0.553** |
IPMDS Domain 1 | 0.836** | 1.000 | 0.551**
| 0.551**
| 0.750** | 0.632** | 0.439** |
IPMDS Domain 2 | 0.929** | 0.551**
| 1.000 | 0.883**
| 0.835** | 0.615** |
0.529** |
IPMDS Domain 3 | 0.907** | 0.551**
| 0.883**
| 1.000 | 0.931** | 0.528** | 0.426** |
Reliability
Factor | Basic functioning | ICCagreement
| No. = number of patients | Feasibility |
---|---|---|---|---|
1.01 | Response to environment |
0.670
| 17 | |
1.02 | Exercise capacity |
0.701
| 13 | x |
1.03 | Walking distance |
0.847
| 16 | |
1.04 | Tiredness |
0.780
| 16 | |
1.05 | Depressed |
0.847
| 12 | x |
1.06 | Epilepsy |
0.855
| 17 | |
1.07 | Headache |
0.931
| 12 | x |
1.08 | Muscle pain | 0.575 | 12 | x |
1.09 | Infections | 0.581 | 17 | |
1.10 | Chewing |
0.942
| 17 | |
1.11 | Swallowing |
0.886
| 17 | |
1.12 | Hearing |
0.762
| 17 | |
1.13 | Communicating |
0.953
| 16 | |
1.14 | Vomiting |
0.972
| 17 | |
1.15 | Gastroesophageal reflux |
0.962
| 15 | |
1.16 | Constipation |
0.833
| 17 | |
1.17 | Diarrhoea |
0.976
| 16 | |
1.18 | Cognitive functioning | 0.635 | 15 | |
1.19 | Behavioural problems | 0.443 | 16 | |
1.20 | Autistic features | 0.661 | 11 | x |
1.21 | Breathing subjective |
0.934
| 15 | |
1.22a | Continence day |
0.725
| 14 | |
1.22b | Continence night |
0.725
| 14 | |
1.23a | Strabismus when tired |
0.736
| 15 | |
1.23b | Ptosis when tired | 0.573 | 15 | |
1.23c | Dysarthria when tired |
0.838
| 13 | x |
2.01 | Growth |
0.944
| 15 | |
2.02 | Weight |
0.751
| 15 | |
2.03 | Alertness | NV | 17 | |
2.04 | Breathing |
0.740
| 17 | |
2.05 | Dysarthria |
0.901
| 12 | x |
2.06 | Ptosis | 0.553 | 17 | |
2.07 | Strabismus |
0.82
| 16 | |
2.08 | Eye movements | 0.691 | 16 | |
2.09 | Nystagmus |
0.925
| 16 | |
2.10 | Vision | 0.343 | 11 | x |
2.11 | Proximal muscle power |
0.913
| 15 | |
2.12 | Distal muscle power |
0.738
| 14 | |
2.13 | Hypokinesia | 0.306 | 14 | |
2.14 | Abnormal movements |
0.884
| 16 | |
2.15 | Ataxia |
0.858
| 14 | |
2.16 | Tremor |
0.864
| 15 | |
2.17 | Reflexes | 0.312 | 16 | |
2.18 | Hypertonia | 0.649 | 17 | |
2.19 | Hypotonia | 0.470 | 17 | |
2.20 | Rigitidy | 0.597 | 17 | |
2.21a | Vibration |
0.231
| 11 | x |
2.21b | Subtle touch | NV | 11 | x |
3.01 | Communicating |
0.957
| 17 | |
3.02 | Head control |
0.983
| 17 | |
3.03 | Rolling over |
0.985
| 16 | |
3.04 | Sitting up |
0.963
| 17 | |
3.05 | Sitting up |
0.984
| 17 | |
3.06 | Standing up |
0.979
| 17 | |
3.07 | Standing |
0.974
| 17 | |
3.08 | Walking |
0.989
| 17 | |
3.09 | Running |
0.968
| 13 | Only >6 years |
3.10 | Hopping |
0.954
| 13 | Only >6 years |
3.11 | Reaching |
0.964
| 16 | |
3.12 | Grasping |
0.949
| 16 | |
3.13 | Rotating |
0.985
| 14 | Only >6 years |