Table 1.
Parameter list including original features along with the details of feature aggregation
| Number | Parameters (features) | Time | Body location | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Preoperative | Week 1 | Week 4 | Week 24 | Breast | Axilla | Upper arm | Joints | Lower arm | Hand/fingers | Operated side arm | Somewhere | ||
| 1 | Age | X | |||||||||||
| 2 | BMI | X | |||||||||||
| 3 | Depressive symptoms (BDI) | X | |||||||||||
| 4 | State anxiety (STAI) | X | |||||||||||
| 5 | Trait anxiety (STAI) | X | |||||||||||
| 6 | Anger inhibition (STAXI-2) | X | |||||||||||
| 7 | Have the pains in the extremities* affected your life? | X | X | X | X | X | X | ||||||
| 8 | Have the pains in the axilla affected your life? | X | X | X | X | ||||||||
| 9 | Have the pains in the hand or fingers affected your life? | X | X | X | X | ||||||||
| 10 | Have the pains in the joints affected your life? | X | X | X | X | ||||||||
| 11 | Have the pains in the lower arm affected your life? | X | X | X | X | ||||||||
| 12 | Have the pains in the upper arm affected your life? | X | X | X | X | ||||||||
| 13 | How much has the pain disturbed your sleep? | X | |||||||||||
| 14 | How much has the pain disturbed your sleep? | X | |||||||||||
| 15 | How much has the pain in the axilla disturbed your sleep? | X | X | X | |||||||||
| 16 | How much has the pain in the breast disturbed your sleep? | X | X | X | |||||||||
| 17 | Pain intensity in the operated-side arm and axilla in the morning? | X | X | X | X | ||||||||
| 18 | Worst pain intensity during the past week at one month | X | X | X | X | X | X | X | |||||
| 19 | Worst pain intensity during the past week at 6 months | X | X | X | X | X | X | X | |||||
| 20 | Worst pain intensity during the past week in the operated breast? | X | X | X | |||||||||
| 21 | Worst pain intensity during the past week somewhere? | X | X | X | |||||||||
The table specifies the time points and, if applicable, the targeted body locations for several questions the patients are asked following surgery. Specifically, for the pain-related parameters #7 - #21 (according to the numbering in the left column), patients were asked about how the pain affected their lives or sleep. These questions were asked at several times (week 1, 4, and 24 after surgery) and for several specific body locations (breast, axilla, upper arm, joints, lower arm, hand, arm on operation side, elsewhere) indicated in the middle block of the table. The “X”s indicate which ratings were averaged to obtain the parameters
*Extremities: aggregated parameters across axilla, upper arm, lower arm, hand/fingers, and the associated joints