Table 5.
Factors associated with chronicity of nonsteroidal anti-inflammatory drug utilization in the active employed population*(n = 5249)
| Odds ratio | 95% CI | |
|---|---|---|
| Sex | ||
| Male | 1.0 | – |
| Female | 1.1 | 0.97, 1.3 |
| Age (10 years) | 1.8 | 1.6, 1.9 |
| Indication | ||
| Back pain | 1.0 | – |
| Osteoarthritis | 1.8 | 1.5, 2.1 |
| All others | 0.7 | 0.6, 0.8 |
| Occupation | ||
| White collar† | 1.0 | – |
| Blue collar | 1.4 | 1.2, 1.6 |
| Body mass index | ||
| <30 | 1.0 | – |
| ≥30 | 1.8 | 1.5, 2.2 |
*
Multiple stepwise logistic regression, model including all variables in the table; smoking and past history of gastrointestinal problems did not enter the final model; chronic users defined as ≥10 prescriptions issued in 1 year, or 4 to 9 with <2 months between two successive prescriptions.
†
White collar workers included the categories managerial and liberal professions, and professions in education and healthcare and specialized technicians; blue collar workers included the categories services and commerce, and labour, material handlers, drivers.