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Table 4 Frequency of impacts in LOPD and associated disturbance rating

From: Qualitative interviews to improve patient-reported outcome measures in late-onset Pompe disease: the patient perspective

Impact concepts descriptors for LOPD

Total mentions (N = 13)

Impact disturbance, mean (SD) (0 = not disturbing at all; 10 = extremely disturbing)

Muscle and mobility

 Difficulty rising from an armchair

*Difficulty rising from a sitting position

10 (76.9%)

6.8 (2.6)

 Difficulty with stairs (primarily going up) *Difficulty climbing stairs

9 (69.2%)

7.0 (3.1)

 Change in the way you walk (“Pompe waddle”)

8 (61.5%)

5.5 (3.4)

 Loss of balance

8 (61.5%)

5.9 (2.6)

 Difficulty getting upright after bending

8 (61.5%)

5.8 (3.0)

 Difficulty rising from a squatting position

8 (61.5%)

6.5 (4.1)

 Difficulty playing sports

7 (53.8%)

7.3 (2.7)

 Cannot walk without assistance

*Can walk with assistance (from another person or a device, like a cane or walker)

6 (46.2%)

7.8 (1.7)

 Reduced ability to move independently

5 (38.5%)

6.4 (2.9)

 Cannot walk at all

4 (30.8%)

8.5 (1.7)

 Can walk but slower and shorter distances than before

3 (23.1%)

6.7 (3.4)

 Falling

2 (15.4%)

9.5 (0.5)

 Difficulty getting up from a fall

2 (15.4%)

10.0 (0.0)

 Cannot lift arms all the way up

1 (7.7%)

7.0 (0.0)

 Difficulty walking in the dark

1 (7.7%)

8.0 (0.0)

 Need to use standing frame

1 (7.7%)

–

Eating

 Unwanted weight gain/difficult losing weight

*Unwanted weight gain

*Difficulty losing weight

10 (76.9%)

5.8 (2.4)

 Difficulty chewing, swallowing, etc

9 (69.2%)

3.7 (2.1)†

 Cannot stay vegetarian

1 (7.7%)

4.0 (0.0)

Activities of daily living

 Reduced ability to perform household tasks

12 (92.3%)

5.4 (2.6)

 Reduced ability to participate in leisure activities I used to be able to

11 (84.6%)

6.6 (2.3)

 Reduced ability to care for oneself (showering, dressing, etc.)

5 (38.5%)

8.3 (1.2)

 Cannot participate with family in their leisure activities

1 (7.7%)

10.0 (0.0)

 Reduced/change in ability to write music

1 (7.7%)

7.0 (0.0)

 Use “urine director” to go to the bathroom

1 (7.7%)

2.0 (0.0)

 Need to be very regulated and methodical about daily activities/more planning required

1 (7.7%)

2.0 (0.0)

 Reduced ability to participate in social activities

*Reduced ability to participate in social/family activities

11 (84.6%)

5.4 (3.4)

 Change in body image

7 (53.8%)

3.9 (1.9)

 Depression

7 (53.8%)

3.6 (1.5)

 Anxiety

6 (46.2%)

7.0 (2.2)

 Feels like a burden to family/others

6 (46.2%)

4.5 (3.5)

 Difficulty coping

2 (15.4%)

5.5 (2.5)

 Reduced ability to effectively communicate

1 (7.7%)

4.0 (0.0)

 Mom felt guilty because of genetic pre-disposition

1 (7.7%)

2.0 (0.0)

 Change in what she can do as a wife and mother to help take care of her family

1 (7.7%)

2.0 (0.0)

 Getting used to accepting the disease

1 (7.7%)

8.0 (0.0)

 Worry about my future

1 (7.7%)

3.0 (0.0)

Other

 Financial difficulties

8 (61.5%)

6.8 (2.9)

 Reduced ability to work/study

9 (69.2%)

7.0 (3.4)

 Difficulty traveling (by car, bus, plane)

9 (69.2%)

5.9 (3.2)

 Sexual issues (e.g., need to use different positions)

7 (53.8%)

5.7 (3.7)

 Sleep problems (e.g., need to get up frequently)

6 (46.2%)

4.2 (2.5)

 Difficulty being away from home

1 (7.7%)

8.0 (0.0)

 Question whether able to take care of young children

1 (7.7%)

9.0 (0.0)

 Uncertainty whether getting pregnant will enhance disease progression

1 (7.7%)

6.0 (0.0)

 Not as mentally sharp

1 (7.7%)

4.0 (0.0)

 Challenge of finding good doctors who understand disease

1 (7.7%)

9.0 (0.0)

 Osteoporosis

1 (7.7%)

9.0 (0.0)

  1. LOPD late-onset Pompe disease, SD standard deviation
  2. *Denotes wording applied to third round of interviews only (Additional file 1)
  3. †Impact disturbance rating was performed by three patients