Table 2.
All cause healthcare resource utilization in the insomnia treated and matched control cohorts
| Category | Overall Patient | |||
|---|---|---|---|---|
| N (%) | Estimated Mean |
Estimated Mean Ratio with 95% CI |
P-valuea | |
| Inpatient Visits | ||||
| Number of visits per month | ||||
| Treated Patients | 315,679 (18.6%) | 0.13 | 1.29 (1.28,1.30) | < .001 |
| Matched Control Cohort | 83,826 (4.9%) | 0.10 | ||
| Length of inpatient stay among those with inpatient visits (days) | ||||
| Treated Patients | 315,679 (18.6%) | 10.81 | 1.52 (1.52, 1.53) | < .001 |
| Matched Control Cohort | 83,826 (4.9%) | 7.10 | ||
| ED Visits | ||||
| Number of visits per month | ||||
| Treated Patients | 374,441(22.0%) | 0.15 | 1.30 (1.297,1.31) | < .001 |
| Matched Control Cohort | 146,947 (8.6%) | 0.12 | ||
| Outpatient Visits | ||||
| Number of visits per month | ||||
| Treated Patients | 868,655 (51.1%) | 0.56 | 1.49 (1.48,1.49) | < .001 |
| Matched Control Cohort | 595,020 (35.0%) | 0.37 | ||
Abbreviations: CI, Confidence interval, ED Emergency department
aMean estimated using a generalized linear model with a Gamma distribution and log link function while adjusting for age, sex, race, geographic region and Charlson Comorbidity Index score
Empty cells represent values not available for analysis. OR adjusted model is not feasible, due to the small sample size
Patients with 1 + MVA, or 1 + fall and MVA, represented a negligible population and were excluded as motor vehicle insurance may have covered healthcare costs