Inappropriate drug use (IDU) was associated with hospitalization in older persons and in persons with dementia. |
IDU was also associated with mortality among older persons. |
There was a tendency for higher costs for hospitalizations with IDU than without IDU, although the difference was not statistically significant. |
1 Introduction
2 Methods
2.1 Study Population
2.2 Sociodemographic Variables
2.3 Drug Use
2.4 Inappropriate Drug Use (IDU)
2.5 Dementia
2.6 Co-Morbidity
2.7 Physical Functioning
2.8 Hospitalizations and Mortality
2.9 Costs of Hospitalization
2.10 Statistical Analysis
2.11 Ethics
3 Results
Characteristic | Total no. of participants | No. of participants with IDU | Prevalence of IDU (%) |
---|---|---|---|
All | 4108 | 536 | 13.0 |
Age (years; continuous) | |||
60–69 | 1559 | 121 | 7.8 |
70–79 | 1127 | 161 | 14.3 |
80–89 | 872 | 151 | 17.3 |
≥90 | 550 | 103 | 18.7 |
Sex | |||
Men | 1528 | 157 | 10.3 |
Women | 2580 | 379 | 14.7 |
Educationa
| |||
Elementary | 1098 | 143 | 13.0 |
Additional | 2976 | 388 | 13.0 |
Residential setting | |||
Community dwelling | 3826 | 440 | 11.5 |
Institution | 282 | 96 | 34.0 |
Dementiab
| |||
No | 3783 | 445 | 11.8 |
Yes | 319 | 87 | 27.3 |
Charlson Comorbidity Index | |||
0 | 2414 | 230 | 9.5 |
1 | 747 | 119 | 15.9 |
2 | 640 | 106 | 16.6 |
≥3 | 307 | 81 | 26.4 |
Number of drugs | |||
0–1 | 1346 | 11 | 0.8 |
2–4 | 1390 | 119 | 8.6 |
≥5 | 1372 | 406 | 29.6 |
Katz ADL | |||
Independent | 3651 | 404 | 11.3 |
Dependent | 409 | 112 | 27.4 |
Characteristic | OR | 95 % CI |
---|---|---|
Age (years; continuous) | 1.04 | 1.03–1.05 |
Sex | ||
Male | Reference | |
Female | 0.80 | 0.67–0.92 |
Dementia | ||
No | Reference | |
Yes | 0.97 | 0.68–1.39 |
Residential setting | ||
Community dwelling | Reference | |
Institution | 0.25 | 0.16–0.38 |
Education | ||
Elementary | Reference | |
Additional | 0.72 | 0.61–0.86 |
Katz ADL | ||
Independent | Reference | |
Dependent | 2.15 | 1.58–2.92 |
Co-morbidity | ||
No co-morbidities | Reference | |
Co-morbidities | 1.35 | 1.15–1.58 |
IDU | ||
No | Reference | |
Yes | 1.46 | 1.18–1.81 |
Characteristic | HR | 95 % CI |
---|---|---|
Age (years; continuous) | 1.07 | 1.06–1.08 |
Sex | ||
Male | Reference | |
Female | 0.76 | 0.68–0.84 |
Dementia | ||
No | Reference | |
Yes | 1.28 | 1.08–1.52 |
Residential setting | ||
Community dwelling | Reference | |
Institution | 1.09 | 0.90–1.52 |
Education | ||
Elementary | Reference | |
Additional | 0.93 | 0.83–1.03 |
Katz ADL | ||
Independent | Reference | |
Dependent | 1.18 | 1.01–1.39 |
Co-morbidity | ||
No co-morbidities | Reference | |
Co-morbidities | 1.41 | 1.27–1.56 |
Hospitalization within 1 year | ||
No | Reference | |
Yes | 1.37 | 1.23–1.53 |
IDU | ||
No | Reference | |
Yes | 1.15 | 1.01–1.31 |
Characteristic | OR | 95 % CI |
---|---|---|
Age (years; continuous) | 1.01 | 0.97–1.05 |
Sex | ||
Male | Reference | |
Female | 0.87 | 0.45–1.71 |
Residential setting | ||
Community dwelling | Reference | |
Institution | 0.26 | 0.13–0.50 |
Education | ||
Elementary | Reference | |
Additional | 0.90 | 0.55–1.57 |
Katz ADL | ||
Independent | Reference | |
Dependent | 1.19 | 0.61–2.30 |
Co-morbidity | ||
No co-morbidities | Reference | |
Co-morbidities | 1.47 | 0.89–2.63 |
IDU | ||
No | Reference | |
Yes | 1.88 | 1.03–3.43 |
Characteristic | HR | 95 % CI |
---|---|---|
Age (years; continuous) | 1.02 | 1.00–1.04 |
Sex | ||
Male | Reference | |
Female | 0.99 | 0.73–1.04 |
Residential setting | ||
Community dwelling | Reference | |
Institution | 0.99 | 0.74–1.33 |
Education | ||
Elementary | Reference | |
Additional | 1.12 | 0.89–1.41 |
Katz ADL | ||
Independent | Reference | |
Dependent | 1.25 | 0.93–1.70 |
Co-morbidity | ||
No co-morbidities | Reference | |
Co-morbidities | 1.11 | 0.88–1.41 |
Hospitalization within 1 year | ||
No | Reference | |
Yes | 1.10 | 0.84–1.44 |
IDU | ||
No | Reference | |
Yes | 1.13 | 0.87–1.47 |
No dementia | 95 % CI | Dementia | 95 % CI | |
---|---|---|---|---|
Cost for hospitalization without IDU (mean ± 95 % CI) [SEK] | 13,362 | 11,934–14,790 | 18,727 | 11,904–25,549 |
Cost for hospitalization with IDU (mean ± 95 % CI) [SEK] | 19,523 | 16,924–22,123 | 20,362 | 14,344–26,379 |