Table 2 Differences scores (observed - predicted response category) and Spearman correlations between observed and predicted responses
From: Development and validation of an interpretive guide for PROMIS scores
Differences Scores (Observed Response Category - Predicted Response Category) for 16 PROMIS Items and Spearman Correlations between Observed and Predicted Responses | |||||||||
|---|---|---|---|---|---|---|---|---|---|
PROMIS Items | Response Category Differences | Item Content and Correlations | |||||||
Fatigue | Observed Response Category - Predicted Response Category | I feel fatigued r = .906 | I have trouble starting things because I am tired r = .874 | How fatigued were you on average? r = .931 | How run-down did you feel on average? r = .921 | ||||
Difference | N | Percent | N | Percent | N | Percent | N | Percent | |
-4 | 0 | 0.0 | 2 | 0.1 | 0 | 0.0 | 0 | 0.0 | |
−3 | 0 | 0.0 | 5 | 0.3 | 0 | 0.0 | 1 | 0.1 | |
−2 | 4 | 0.3 | 51 | 3.2 | 0 | 0.0 | 4 | 0.3 | |
−1 | 164 | 10.3 | 238 | 15.0 | 62 | 3.9 | 113 | 7.1 | |
0 | 1174 | 74.0 | 1123 | 70.8 | 1272 | 80.1 | 1290 | 81.3 | |
1 | 240 | 15.1 | 163 | 10.3 | 251 | 15.8 | 175 | 11.0 | |
2 | 5 | 0.3 | 5 | 0.3 | 3 | 0.2 | 4 | 0.3 | |
3 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
4 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
Total N | 1587 | 1587 | 1588 | 1587 | |||||
Anxiety | I felt fearful r = 0.762 | I found it hard to focus on anything other than my anxiety r = 0.849 | My worries overwhelmed me r = 0.814 | I felt uneasy r = 0.848 | |||||
Difference | N | Percent | N | Percent | N | Percent | N | Percent | |
−4 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
−3 | 1 | 0.1 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
−2 | 7 | 0.4 | 1 | 0.1 | 2 | 0.1 | 7 | 0.4 | |
−1 | 132 | 8.3 | 53 | 3.3 | 95 | 6.0 | 271 | 17.1 | |
0 | 1103 | 69.5 | 1302 | 82.0 | 1238 | 78.0 | 1181 | 74.4 | |
1 | 330 | 20.8 | 209 | 13.2 | 232 | 14.6 | 123 | 7.7 | |
2 | 15 | 0.9 | 22 | 1.4 | 20 | 1.3 | 5 | 0.3 | |
3 | 0 | 0.0 | 1 | 0.1 | 0 | 0.0 | 1 | 0.1 | |
4 | 0 | 0.0 | 0 | 0.0 | 1 | 0.1 | 0 | 0.0 | |
Total N | 1588 | 1588 | 1588 | 1588 | |||||
Depression | I felt worthless r = 0.847 | I felt helpless r = 0.798 | I felt depressed r = 0.846 | I felt hopeless r = 0.826 | |||||
Difference | N | Percent | N | Percent | N | Percent | N | Percent | |
−4 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
−3 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
−2 | 12 | 0.8 | 5 | 0.3 | 4 | 0.3 | 1 | 0.1 | |
−1 | 130 | 8.2 | 66 | 4.2 | 154 | 9.7 | 40 | 2.5 | |
0 | 1349 | 84.9 | 1212 | 76.3 | 1120 | 70.5 | 1323 | 83.3 | |
1 | 96 | 6.0 | 256 | 16.1 | 302 | 19.0 | 211 | 13.3 | |
2 | 2 | 0.1 | 47 | 3.0 | 8 | 0.5 | 13 | 0.8 | |
3 | 0 | 0.0 | 2 | 0.1 | 0 | 0.0 | 0 | 0.0 | |
4 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
Total N | 1589 | 1588 | 1588 | 1588 | |||||
Pain Interference | How much did pain interfere with your day to day activities? r = 0.922 | How much did pain interfere with work around the home? r = 0.950 | How much did pain interfere with your ability to participate in social activities? r = 0.916 | How much did pain interfere with your household chores? r = 0.920 | |||||
Difference | N | Percent | N | Percent | N | Percent | N | Percent | |
−4 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
−3 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
−2 | 0 | 0.0 | 2 | 0.1 | 6 | 0.4 | 7 | 0.4 | |
−1 | 114 | 7.2 | 104 | 6.6 | 136 | 8.7 | 167 | 10.7 | |
0 | 1253 | 79.5 | 1334 | 85.3 | 1230 | 78.2 | 1222 | 78.2 | |
1 | 200 | 12.7 | 121 | 7.7 | 185 | 11.8 | 151 | 9.7 | |
2 | 9 | 0.6 | 3 | 0.2 | 13 | 0.8 | 14 | 0.9 | |
3 | 1 | 0.1 | 0 | 0.0 | 2 | 0.1 | 1 | 0.1 | |
4 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 | |
Total N | 1577 | 1564 | 1572 | 1562 | |||||