Table 4.
Summary descriptive statistics of participant responses to the scales from the PIPPI a (n = 344) project used to assess construct validity.
| Construct Validity Items | Mean | SD or n (%) |
|---|---|---|
| Overall work ability | 8 | SD 1.4 |
| Work ability in the physical domain | ||
| Very poor | 72 | 21% |
| Poor | 157 | 46% |
| Fairly good | 100 | 29% |
| Good | 15 | 4% |
| Very good | 0 | 0% |
| Work ability in the psychological domain | ||
| Very poor | 56 | 16% |
| Poor | 155 | 45% |
| Fairly good | 47 | 14% |
| Good | 24 | 7% |
| Very good | 1 | 0.3% |
| Feeling recovered on awaking | ||
| At no time | 8 | 2% |
| Rarely | 103 | 30% |
| Some of the time | 153 | 45% |
| Most of the time | 60 | 17% |
| All of the time | 20 | 6% |
| Feeling calm and relaxed | ||
| At no time | 14 | 4% |
| Rarely | 144 | 42% |
| Some of the time | 95 | 28% |
| Often | 59 | 17% |
| Most of the time | 23 | 7 % |
| All of the time | 9 | 3% |
| Physical exertion at work | 6 | SD 2.3 |
| Days of inhibiting pain | ||
| 0–10 | 287 | 85% |
| 11–20 | 27 | 8% |
| >20 | 24 | 7% |
a Participants were involved primarily with work in the Danish manufacturing industry.