Patient satisfaction with root canal treatment and outcomes in the Swedish public dental health service. A prospective cohort study

ObjectiveWhole-body MRI (wb-MRI) is increasingly used in research and screening but little is known about the effects of incidental findings (IFs) on health service utilisation and costs. Such effects are particularly critical in an observational study. Our principal research question was therefore how participation in a wb-MRI examination with its resemblance to a population-based health screening is associated with outpatient service costs.DesignProspective cohort study.SettingGeneral population Mecklenburg-Vorpommern, Germany.ParticipantsAnalyses included 5019 participants of the Study of Health in Pomerania with statutory health insurance data. 2969 took part in a wb-MRI examination in addition to a clinical examination programme that was administered to all participants. MRI non-participants served as a quasi-experimental control group with propensity score weighting to account for baseline differences.Primary and secondary outcome measuresOutpatient costs (total healthcare usage, primary care, specialist care, laboratory tests, imaging) during 24 months after the examination were retrieved from claims data. Two-part models were used to compute treatment effects.ResultsIn total, 1366 potentially relevant IFs were disclosed to 948 MRI participants (32% of all participants); most concerned masses and lesions (769 participants, 81%). Costs for outpatient care during the 2-year observation period amounted to an average of €2547 (95% CI 2424 to 2671) for MRI non-participants and to €2839 (95% CI 2741 to 2936) for MRI participants, indicating an increase of €295 (95% CI 134 to 456) per participant which corresponds to 11.6% (95% CI 5.2% to 17.9%). The cost increase was sustained rather than being a short-term spike. Imaging and specialist care related costs were the main contributors to the increase in costs.ConclusionsCommunicated findings from population-based wb-MRI substantially impacted health service utilisation and costs. This introduced bias into the natural course of healthcare utilisation and should be taken care for in any longitudinal analyses.

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A prospective cohort study of microvascular decompression and Gamma Knife surgery in patients with trigeminal neuralgia

Journal of Neurosurgery ◽

10.3171/jns/2008/109/12/s25 ◽

2008 ◽

Vol 109 (Supplement) ◽

pp. 160-172 ◽

Cited By ~ 55

Author(s):

Mark E. Linskey ◽

Vaneerat Ratanatharathorn ◽

Jose Peñagaricano

Keyword(s):

Cohort Study ◽

Patient Satisfaction ◽

Trigeminal Neuralgia ◽

Gamma Knife ◽

Prospective Cohort Study ◽

Microvascular Decompression ◽

Prospective Cohort ◽

Gamma Knife Surgery ◽

Free Status

Object The aim of this study was to analyze 1 surgeon's 4-year experience with microvascular decompression ([MVD], 36 patients) and Gamma Knife surgery ([GKS], 44 patients) in 80 consecutive patients with trigeminal neuralgia (TN). Methods The authors conducted a prospective cohort study from March 1999 to December 2003 with an independent clinical assessment of the results and serial patient satisfaction surveys. All patients completed a 2004 patient satisfaction survey (0.5–5 years postoperative), and 70% of surviving patients completed the same survey in 2007 (3.9–8.5 years postoperative). Follow-up was undertaken in 100% of the patients (mean 3.4 ± 2.14 years, range 0.17–8.5 years). Results Respective initial and latest follow-up raw pain-free rates were 100 and 80.6% for MVD and 77.3 and 45.5% for GKS. The median time to the maximal benefit after GKS was 4 weeks (range 1 week–6 months). Respective initial, 2-, and 5-year actuarial pain-free rates were 100, 88, and 80% for MVD and 78, 50, and 33% for GKS (p = 0.0002). The relative risk of losing a pain-free status by 5 years posttreatment was 3.35 for patients in the GKS group compared with the MVD group. Initial and 5-year actuarial rates for ≥ 50% pain relief after GKS were 100 and 80%, respectively. The respective rates of permanent mild and severe sensory loss were 5.6 and 0% for patients in the MVD group, as opposed to 6.8 and 2.3% for patients in the GKS group. Anesthesia dolorosa did not occur during the study. Both procedures enjoyed a high degree of early patient satisfaction (95–100%). Microvascular decompression maintained the same rate of patient satisfaction, but satisfaction with GKS decreased to 75% as pain control waned. Twenty-three patients (29%) died of causes unrelated to the TN or the surgical intervention during the follow-up, and their pain status was known at the time of death. Statistically significant intergroup differences for the MVD versus GKS cohorts were age (median 54 years, range 36–70 years vs median 74 years, range 48–92 years, respectively), preoperative symptom duration (median 2.58 years, range 0.33–15 years vs median 7.5, range 0.6–40 years, respectively), and the presence of major comorbidities (2.8 vs 58.3%, respectively). Conclusions In this nonrandomized prospective cohort trial of selected patients with potentially relevant intergroup differences, MVD was significantly superior to GKS in achieving and maintaining a pain-free status in those with TN and provided similar early and superior longer-term patient satisfaction rates compared with those for GKS. The complications of wound cerebrospinal fluid leakage, hearing loss, and persistent diplopia (1 case each in the MVD group) were not seen after GKS.

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