Introduction
To determine the disease burden and costs in moderate-to-severe chronic osteoarthritis (OA) pain refractory to standard-of-care treatment in the Spanish National Health System (NHS).
Methods
Ancillary analysis of the OPIOIDS real-world, non-interventional, retrospective, 4-year longitudinal study including patients aged at least 18 years with moderate-to-severe chronic OA pain refractory to standard-of-care with sequential NSAIDs plus opioids. Burden assessment included measurement of analgesia, cognitive functioning, basic activities of daily living, severity and frequency of comorbidities, and all-cause mortality. Costs accounted for healthcare resource utilization and related costs (year 2018).
Results
Records of 13,317 patients were analyzed; 68.9 (14.7) years old, 71.3% (70.5–72.1%) women, 58.1% refractory to NSAID plus weak opioid and 41.9% to NSAID plus strong opioid, accounting for 10.7% (10.5–10.8%) of patients with chronic OA pain. Mean number of comorbidities was 2.9 (1.8) and its severity was 1.8 (1.7). Pain decreased by 0.9 points (12.2%) and cognitive declined by 2.3 points (9.1%, with 4.3% more patients with cognitive deficit) and dependency worsened by 0.4 points (0.5%, with 2.3% more patients with severe-to-total dependence) over a mean treatment period of 188.6 (185.4–191.8) days on NSAIDs followed by 400.6 (393.7–407.5) days on opioids. The adjusted mortality rate was higher in patients with OA taking NSAID plus strong opioids; hazard ratio 1.44 (1.26–1.65;
p
< 0.001). The 4-year healthcare cost was €7350/patient (€7193–7507 or €1838/year) and was higher in those taking strong versus weak opioids; €9886 (€9608–10,164, €2472/year) vs. €5519 (€5349–5689, €1380/year),
p
< 0.001. Analgesia cost (16.0% of total cost, 70.2% opioids) was higher with strong versus weak opioids, 19.6% vs. 11.3%,
p
< 0.001.
Conclusions
In routine clinical practice in Spain, patients with moderate-to-severe chronic OA pain refractory to standard analgesic treatment with NSAIDs plus opioids reported modest reductions in pain, while presenting a considerable burden of comorbidities, cognitive impairment, and dependency. Healthcare costs significantly increased for the NHS particularly with NSAIDs plus strong opioids.
Supplementary Information
The online version contains supplementary material available at 10.1007/s40744-020-00271-y.
ObjectiveTo evaluate sick leave and its costs in active workers who initiate opioid treatment for moderate/severe chronic osteoarthritis (OA) pain.
MethodsSecondary analysis of the longitudinal, retrospective OPIOIDS study using electronic medical records (EMR) of patients aged ≥ 18 years who started opioid treatment for chronic OA pain between 2010 and 2015 after treatment failure with usual analgesics. The follow-up period was 36 months from the index date, and the days of sick leave and their cost were analyzed.
ResultsA total of 5,089 EMRs of OA chronic pain patients aged 56.8 years (SD: 4.6), 56.6% male, were analyzed: 73.3% of patients started treatment with a weak opioid and 26.7% a strong opioid. At 36 months, adherence was 21% (strong opioids 15.4%, weak opioids: 23%; p<0.001), and 77% of patients had at least one sick leave related with OA chronic pain, with a mean total days off work of 93 days in all actively working patients (120.5 days in patients with sick leaves). In 16.9% it lasted ≥ 6 months. Pain reduction was modest (-1.2 points; -4.0%, p<0.001). The cost of sick leave was € 2,594 patient/year and was associated (p<0.05) with age (β-0.043), female sex (β-0.035), comorbidity (β-0.034) and strong opioid use (β-0.037).
ConclusionsActive workers who started opioid treatment for chronic osteoarthritis pain showed an increased frequency of sick leave and cost to society, with modest pain reduction. Age, female sex, comorbidity, and strong opioids were factors associated with the cost of sick leave.
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