Background
Methods
OPSAT-Q development
Psychometric evaluation
Participants and procedures
Study measures in addition to the OPSAT-Q
OPTQoL
Patient-reported demographic/clinical questionnaire
Follow-up visit clinical questionnaire
Statistical analysis
Reliability
Construct validity
Results
Sample characteristics
Item | Enrolled (N = 104) |
---|---|
Age (years) mean (SD)
| 65.1 (10.3) |
Race n (%)
| |
White | 67 (64.4%) |
Black | 1 (1.0%) |
Hispanic | 36 (34.6%) |
Living Situation
| |
Living alone | 25 (24.0%) |
Living with another | 77 (74.0%) |
Other | 2 (1.9%) |
Work Status
| |
Full-time | 17 (16.3%) |
Part-time | 19 (18.3%) |
Currently not working at a paid job | 61 (58.7%) |
Other | 7 (6.7%) |
Education (highest level completed) | |
Elementary | 4 (3.8%) |
High school | 38 (36.5%) |
Some college | 31 (29.8%) |
College degree | 19 (18.3%) |
Postgraduate | 10 (9.6%) |
Other | 2 (1.9%) |
Time since diagnosis (years), mean ± SD | 6.4 ± 7.0 |
No Health Insurance
| 16 (15.4%) |
Time since first starting prescription meds for osteoporosis (bisphosphonates)
| |
< 3 months ago | 7 (6.7%) |
> 3 months – 1 year | 14 (13.5%) |
> 1 – 3 years ago | 35 (33.7%) |
> 3 years | 48 (46.2%) |
Current Osteoporosis Treatment
1
| |
Weekly alendronate | 61 (59%) |
Daily alendronate | 13 (13%) |
Weekly risendronate | 21 (20%) |
Daily risendronate | 6 (6%) |
Experienced at least 1 fracture since menopause n (%) | 27 (26.0%) |
Comorbid conditions n (%) | |
Angina | 3 (2.9%) |
Arthritis | 59 (56.7%) |
COPD | 6 (5.8%) |
Congestive heart failure | 3 (2.9%) |
Depression | 17 (16.3%) |
Hypertension | 32 (30.8%) |
Other | 26 (25.0%) |
Item and scale properties
Scale | Mean | SD | Median | Floor (%) | Ceiling (%) | Range |
---|---|---|---|---|---|---|
Convenience | 83.4 | 13.5 | 83.3 | 1.0% | 10.7% | 31–100 |
Daily Activities | 81.1 | 16.9 | 83.3 | 1.0% | 22.3% | 17–100 |
Overall Satisfaction | 84.1 | 15.7 | 83.3 | 1.0% | 28.2% | 17–100 |
Side Effects | 89.6 | 14.3 | 95.8 | 1.0% | 45.6% | 42–100 |
Composite Satisfaction Score | 84.9 | 10.6 | 86.9 | 1.0% | 4.8% | 44–100 |
Subscale | |||||
---|---|---|---|---|---|
Item
|
Convenience
|
Daily Activities
|
Overall Satisfaction
|
Side Effects
|
CSS
|
1 How often | 0.78*** | 0.42*** | 0.54*** | 0.07 | 0.66*** |
2 Convenience | 0.89*** | 0.39*** | 0.51*** | 0.17 | 0.75*** |
3 Easy to take | 0.84*** | 0.40*** | 0.45*** | 0.13 | 0.70*** |
4 Easy to remember | 0.66*** | 0.29** | 0.25* | 0.09 | 0.51*** |
5 Fits into medication schedule | 0.83*** | 0.35*** | 0.49*** | 0.11 | 0.68*** |
6 Time required | 0.85*** | 0.51*** | 0.51*** | 0.28** | 0.80*** |
7 Confidence to participate in daily activities | 0.46*** | 0.92*** | 0.69*** | 0.15 | 0.66*** |
8 Confidence to be physically active | 0.44*** | 0.94*** | 0.68*** | 0.21* | 0.68*** |
9 Overall satisfaction | 0.52*** | 0.75*** | 0.95*** | 0.17 | 0.72*** |
10 Continue taking | 0.54*** | 0.63*** | 0.93*** | 0.15 | 0.69*** |
11 Hearburn/acid reflux bother | 0.29** | 0.27** | 0.25* | 0.58*** | 0.49*** |
12 Other stomach upset bother | 0.17 | 0.05 | -0.06 | 0.63*** | 0.33*** |
13 Any other side effect bother | 0.11 | 0.12 | 0.14 | 0.68*** | 0.38*** |
14 Heartburn/acid reflux freqency | 0.13 | 0.16 | 0.21* | 0.73*** | 0.42*** |
15 Other stomach upset frequency | -0.01 | 0.08 | 0.02 | 0.57*** | 0.24* |
16 Any other side effect frequency | 0.08 | 0.09 | 0.06 | 0.75*** | 0.37*** |
Reliability
Scale | Number of Items | Cronbach's alpha | ICCa
|
---|---|---|---|
Convenience | 6 | 0.89 | 0.72 |
Daily Activities | 2 | 0.84 | 0.62 |
Overall Satisfaction | 2 | 0.87 | 0.64 |
Side Effects | 6 | 0.72 | 0.79 |
Composite Satisfaction Score | 16 | 0.87 | 0.81 |
Construct validity
OPSAT-Q™ Scales and Composite Satisfaction Score (CSS) | |||||
---|---|---|---|---|---|
Convenience
|
Daily Activities
|
Side Effects
|
Overall Satisfaction
|
CSS
| |
Overall Convenience | 0.73*** | 0.47*** | 0.29** | 0.58*** | 0.74*** |
Overall Fear | 0.22* | 0.43*** | 0.15 | 0.42*** | 0.37*** |
Overall Side Effects | 0.27** | 0.29** | 0.57*** | 0.24* | 0.48*** |
OPTQoL Adjustments | 0.37*** | 0.33*** | 0.23* | 0.21* | 0.40*** |
OPTQoL Physical Difficulty | 0.17 | 0.27** | 0.10 | 0.17 | 0.23* |
OPTQoL Fears | 0.16 | 0.32*** | 0.32*** | 0.15 | 0.32** |