Table 3.
HRQoL (SF-36 summary) outcomes of CLBP respondents according to level of presenteeism
| Total (n=239) |
No presenteeism (0%) (n=54) |
Low presenteeism (10%–20%) (n=71) |
High presenteeism (≥30%) (n=114) | P values* | |
| Mean±SD | Mean±SD | Mean±SD | Mean±SD | ||
| HRQoL: summary scores (US norms) | |||||
| Mental component summary | 45.0±10.3 | 50.8±6.3 | 48.2±9.3 | 40.2±10.3† | <0.001 |
| Physical component summary | 48.2±6.6 | 51.0±5.7 | 49.9±5.7 | 45.7±6.7† | <0.001 |
| SF-6D health utility index | 0.68±0.11 | 0.75±0.09 | 0.72±0.10 | 0.63±0.09† | <0.001 |
| HRQoL: health profile scores (Japanese norms) | |||||
| Physical functioning | 46.5±13.0 | 49.3±12.3 | 49.8±9.9 | 43.1±14.2† | 0.001 |
| Physical role limitations | 44.8±12.6 | 51.8±8.7 | 48.7±9.3 | 39.0±13.5† | <0.001 |
| Bodily pain | 40.7±8.2 | 44.5±8.2 | 42.9±7.1 | 37.4±7.6† | <0.001 |
| General health | 43.1±10.3 | 49.6±9.1 | 45.6±9.0† | 38.5±9.5† | <0.001 |
| Vitality | 42.5±10.2 | 48.3±6.5 | 45.8±9.8 | 37.8±9.7† | <0.001 |
| Social functioning | 44.6±12.3 | 50.5±8.3 | 48.5±11.0 | 39.5±12.7† | <0.001 |
| Emotional role limitations | 46.6±12.1 | 52.8±7.9 | 50.6±8.3 | 41.2±13.3† | <0.001 |
| Mental health | 44.3±10.6 | 49.6±8.3 | 46.9±10.5 | 40.3±10.0† | <0.001 |
*Variables were compared using a one-way analysis of variance test.
†Post hoc pairwise comparisons versus no presenteeism were conducted using the Bonferroni correction and were significantly different from those with no presenteeism at p<0.05.
CLBP, chronic lower back pain; HRQoL; health-related quality of life; SF-6D, Short Form-6 dimension; SF-36, Short Form-36.