Treatment duration

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The index ‘Treatment Duration Control’ for enabling randomized controlled trials with variation in duration of treatment of chronic pain patients

The index ‘Treatment Duration Control’ for enabling randomized controlled trials with variation in duration of treatment of chronic pain patients

Second, the chance of detecting added reference items with large score values, transient ones in particular, may depend on the frequency of visits and the duration of treat- ment. For example, suppose that a sign or symptom, which is related to a potential added reference item, reaches a high level for a short time. The likelihood of detecting the high score level of such an item is then larger with a higher frequency of visits. Furthermore, suppose that the scores of more items are transiently increased. With a particular fre- quency of visits, detection of one of these items will then occasionally occur when the timing of a high score level coincides with that of a measurement. Such a coincidence will occur more likely with a longer duration of treatment. The therapies used in the current Randomized Controlled Trial differed in a therapy- and patient-specific way in number of visits and in treatment duration. Although nei- ther the frequency of addition nor the number of added items differed significantly between therapies at the end of treatment, application of the mode of separately added ref- erence items from clinician and assessor, is a sine qua none. Thus the treatment period was considered as a black box in the present study for determining the post- treatment TDC values, to avoid any bias which might be due to variation in number or frequency of visits and dur- ation of treatment. Furthermore, the number of post- treatment visits for treatment evaluation by the assessor and their intervals were the same for the various therapies. As explained before, the mode of separately added refer- ence items yields an inter-mode bias of the post-treatment TDC-values when the baseline of an added reference item is used for determining its initial Contrast-value. Below it will be shown that by using zero as an initial Contrast- value, which can be theoretically expected, the inter-mode bias is largely diminished.
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Treatment duration and prognostics in febrile urinary tract infection

Treatment duration and prognostics in febrile urinary tract infection

cases constrained a purposeful exploration of subgroups. Given the identical efficacy of the 7-day and 14 -day treatment in women, and the absence of a relation with manifest or possible prostatitis as reason for the inferiority of 7-day treatment in men, our findings cannot reliably explain this outcome. There is a lack of studies on optimal treatment duration of fUTI in men. One study directly compared different treatment duration in an open, prospective and randomized trial in 72 men with community-acquired fUTI showing simi- lar bacteriological cure rates with ciprofloxacin 500 mg orally twice daily for either 2 or 4 weeks.[11] Similarly, a randomized, double-blind trial in Swe- den lent support for the efficacy of 14 day treatment with fluoroquinolones in men.[12] Taken together, the studies confirm that at present, a 14-day treatment regimen of fluoroquinolones is the minimum period necessary for optimal therapy of fUTI in men. Recently however, a retrospective analysis of a large database of male veterans indicated that more than 7 days of antibiotic treatment (the vast majority being treated with ciprofloxacin) was not associated with a reduction of UTI recurrence.[13] In addition, this study showed that treatment with β-lactams was associated with a higher risk of recurrence as compared to fluoroquinolone treatment. Furthermore, they showed that UTI recurrence was independently associated with comorbidities and age. As in our study about half of the patients were initially treated with a β-lactam intravenously, implying less penetration into the prostrate,[14] this may have influenced our results and possibly this may explain the larger difference in cure rates within the subgroup of men with stepdown treat- ment. Interestingly, in line with this we found no significant difference in men who were solely treated with ciprofloxacin whereas in men aged less than 50 years, there was a similar cure rate with antibiotic treatment for 7 or 14 days. Future studies should address whether in men less than 50 years, fUTI can be efficaciously treated with 7 days of ciprofloxacin.
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Randomized clinical trials to identify optimal antibiotic treatment duration

Randomized clinical trials to identify optimal antibiotic treatment duration

The result is that there is strong pressure to conduct studies or trials that evaluate only one treatment du- ration, since evaluation of multiple durations ( d ) would require separate study arms for each time period and a total of N × d study subjects. To minimize the risk of failing to demonstrate non-inferiority, a single treatment duration that is substantially greater than the theoretical minimum duration required is often selected and these study results are used to establish treatment guidelines. The outcome is that the shortest optimal duration of treatment is almost never identified and we are left in the unenviable position of prescribing antibiotics for lon- ger durations than are likely necessary [3]. The downside of this approach, as clearly identified by Rice [3], is that every additional day of antibiotic treatment beyond the minimum required to cure disease increases the risk that host flora will develop resistance to the antimicrobial agent, not to mention additional costs to patients and health providers. Therefore, it behooves us to determine the minimum duration of antibiotic treatment of any given infectious disease. An additional incentive to de- termine the minimum duration of treatment is that for diseases where the duration is substantial, such as tuber- culosis, reducing the duration of treatment can substan- tially reduce cost and increase adherence [8].
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An Investigation of Treatment Duration for Students Receiving Check, Connect, and Expect.

An Investigation of Treatment Duration for Students Receiving Check, Connect, and Expect.

Taken together, there are several studies examining the efficacy of these Tier 2 behavior interventions with varying treatment durations (i.e., six weeks to two years). Out of 31 studies, only 2 studies analyzed the relationship between treatment duration and treatment outcomes (Sinclair, Christenson, & Thurlow, 2005; Stage et al., 2012). For one of the studies (i.e., Sinclair Christenson, & Thurlow), the researchers most likely did not have the statistical power to detect effects due to an extremely small sample size (N=12). The second study (i.e., Stage et al, 2012) examined individual differences through growth curve analysis for students who were successful in CCE. The results revealed that predictive validity was achieved at four weeks compared to the originally suggested eight weeks in the basic intervention, although this study did not investigate the effects of duration for all four levels of CCE interventions used.
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Treatment Duration With Steroid Monotherapy in Dogs With Steroid Responsive Meningitis Arteritis

Treatment Duration With Steroid Monotherapy in Dogs With Steroid Responsive Meningitis Arteritis

It appears from the available literature that a 6 month tapering steroid monotherapy protocol as per Lowrie et al. (2009) is effective at controlling clinically confirmed SRMA and resulted in a 6-month disease free post- treatment interval. A similar standardised 6 month treatment protocol was suggested by Tipold & Jaggy (1994) which described a 4 year disease free period post-treatment, however details of how follow-up data was obtained is lacking.

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A COMPARATIVE STUDY OF TREATMENT DURATION FOLLOWUP AND INCLINATION TOWARDS TREATMENT FROM GOVERNMENT HOSPITALS OR PRIVATE CLINCS BY GERIATRIC PATIENTS WITH MENTAL HEALTH DISORDERS IN GUJARAT

A COMPARATIVE STUDY OF TREATMENT DURATION FOLLOWUP AND INCLINATION TOWARDS TREATMENT FROM GOVERNMENT HOSPITALS OR PRIVATE CLINCS BY GERIATRIC PATIENTS WITH MENTAL HEALTH DISORDERS IN GUJARAT

The researcher based on the primary classification of the 50 sampled psychiatrists as shown in Table 1.9, has tried to undertake the comparative study of the inclination towards their treatment of senior citizens’ male and female in both Government Hospital/ Institutions as well as for those going to Private practising doctors. The comparative summary of the patient catchment of senior citizens’ in both Private and Government setup is shown in Table 1.10.

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Management of febrile urinary tract infection among spinal cord injured patients

Management of febrile urinary tract infection among spinal cord injured patients

Treatment duration is a subject of wide debate. Studies suggest that a short length (5 days) of antibiotic treatment should be encouraged for uncomplicated pyelonephritis [15, 16]. Generally shortening antibiotic treatment dur- ation is a leading goal in public health. It is considered as a tool to fight against bacterial resistance and has several other advantages such as the reduction of side effects and cost. Even if we have not measured these components in our study, we are convinced that short antibiotic treat- ment duration tend towards these advantages.
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Comparing the effectiveness of the 0 018 inch versus the 0 022 inch bracket slot system in orthodontic treatment: study protocol for a randomized controlled trial

Comparing the effectiveness of the 0 018 inch versus the 0 022 inch bracket slot system in orthodontic treatment: study protocol for a randomized controlled trial

The following standardized data will be recorded for the trial participants at three stages of orthodontic treat- ment. Before start of orthodontic treatment: full ortho- dontic diagnostic clinical assessment, orthodontically trimmed study models at the start of orthodontic treat- ment, IOTN (aesthetic component score), long-cone paralleling technique periapical radiographs of maxillary central incisors, lateral cephalometric radiographs re- corded before the start of treatment and patient ques- tionnaire (pre-treatment). During orthodontic treatment: treatment duration, number of appointments, dates of key stages in fixed appliance orthodontic treatment, number of fixed appliance components replaced during active treatment, patient questionnaires (Smiles Better) regard- ing their perception of the impact of treatment (completed by the patient at six months from the start of orthodontic treatment), long-cone paralleling technique periapical radiographs of maxillary incisors recorded at nine months after the start of orthodontic treatment using digital radiography and lateral cephalometric radiograph recorded before the completion of active treatment.
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Methadone treatments in a Swiss Region, 2001–2008: a registry based analysis

Methadone treatments in a Swiss Region, 2001–2008: a registry based analysis

The duration of treatment retention varies widely across different studies. A German study [18] observed that 50% of patients continued their treatment for more than 7 years, with a 65% retention rate at one year. Another study in Spain reported similar results, with a 60% retention rate at one year and 38% at 3 years [25]. In a recent US study, shorter treatment duration (mean 8 months) and lower re- tention rates were observed [13]. Low retention rates at one year (25–50% in certain studies) were reported in a 2001 review by Magura et al. [23], who identified the re- strictive and coercive nature of specific treatment regi- mens as factors associated with low retention rates. A study of the treatment system in Norway [4] that demon- strated low retention rates resulted in the loosening of conditions of access to treatment and a modification of exclusion rules. A recent Italian longitudinal study con- ducted on more than 5000 patients [27] concluded that abstinence-oriented treatments were associated with lower retention rates than substitution-oriented treatments. A previous study had also demonstrated poorer outcomes with methadone reduction regimens than with methadone maintenance regimens [20].
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The Analysis of Censored Covariates in Observational Studies

The Analysis of Censored Covariates in Observational Studies

Data from a study that did not randomize patients to different treatment du- ration policies, such as the data from patients in the ESPRIT trial who received eptifibatide, includes the length of infusion for each patient and whether the infusion was terminated because of a protocol-defined adverse event or because of physician discretion. One difficulty in estimating the mean response for different treatment duration policies using the observed data is that, unlike a well-designed randomized treatment duration study, when a patient has their treatment terminated because of an adverse event then we do not know what treatment duration policy was intended for that patient. Also, as in most observational studies, because infusion length was left to the discretion of the physician rather than dictated by design (randomization), patients receiving different durations may not be prognostically similar. It is intu- itively apparent that simply averaging responses among individuals observed to have completed infusion of length t, either including or excluding patients experiencing a treatment-terminating event prior to t, would yield a biased estimator of the desired policy mean.
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Decreased Specificity of an Assay for Recent Infection in HIV-1-Infected Patients on Highly Active Antiretroviral Treatment: Implications for Incidence Estimates

Decreased Specificity of an Assay for Recent Infection in HIV-1-Infected Patients on Highly Active Antiretroviral Treatment: Implications for Incidence Estimates

The aim of this study was to estimate the rate of misclassification in treated HIV patients who initiated treatment at the chronic stage of HIV infection using an enzyme immunoassay (EIA) that discriminates between recent infection (RI; within 6 months) and established infection. The performance of EIA-RI was evaluated in 96 HIV-1 chronically infected patients on highly active antiretroviral therapy (HAART) with an undetectable viral load (VL) for at least 3 years. Demographic data, HIV-1 viral load, CD4 ⴙ T-cell count, viral subtype, and treatment duration were collected. The subset of misclassified patients was further ana- lyzed using samples collected annually. The impact on incidence estimates was evaluated by simulation. The specificity in treated patients was significantly lower (70.8 to 77.1%) than that observed in untreated patients (93.3 to 99.3%, P < 0.001). Patients falsely classified as recently infected had been treated for a longer period and had longer-term viral suppression than those cor- rectly classified. The loss of specificity of the test due to treatment may have a dramatic impact on the accuracy of the incidence estimates, with a major impact when HIV prevalence is high. The cross-sectional studies intended to derive HIV incidence must collect information on treatment or, alternatively, should include detection of antiretroviral drugs in blood specimens to rule out treated patients from the calculations.
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Update on imatinib for gastrointestinal stromal tumors: duration of treatment

Update on imatinib for gastrointestinal stromal tumors: duration of treatment

9 mutation should be treated with high-dose (800 mg/day) imatinib analogous to that recommended in the advanced setting. Second, opinions are split with regard to the rare wild-type GIST subgroup. Third, there is the issue of whether patients who fall into the intermediate-risk group should be offered adjuvant therapy and what improvements can be made to risk stratification. Finally, the trial data clearly support three years of adjuvant imatinib over one year but should the treatment duration be longer? We know from the BFR-14 trial in patients with advanced GIST that some patients who had a complete response to imatinib but then had interrupted therapy relapsed even after five years of treatment (see section on Prolongation of imatinib treatment by intermittent dosing). This may suggest the persistence of an as yet unidentified imatinib-resistant GIST cancer stem cell population. 57 The
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Intrapleural Dornase and Tissue Plasminogen Activator in pediatric empyema (DTPA): a study protocol for a randomized controlled trial

Intrapleural Dornase and Tissue Plasminogen Activator in pediatric empyema (DTPA): a study protocol for a randomized controlled trial

Background: A randomized controlled trial of adults with empyema recently demonstrated decreased length of stay in hospital in patients treated with intrapleurally administered dornase alfa and fibrinolytics compared to fibrinolytics alone. Whether this treatment strategy is safe and effective in children remains unknown. Methods/design: This study protocol is for a superiority, placebo-controlled, parallel-design, multicenter randomized controlled trial. The participants are previously well children admitted to a children ’ s hospital with a diagnosis of empyema requiring chest tube insertion and fibrinolytics administered intrapleurally. Children will be randomized after the treating physician has decided that pleural drainage is required but prior to chest tube insertion. After chest tube insertion, participants in the treatment group will receive intrapleurally administered tissue plasminogen activator (tPA) 4 mg followed by dornase alfa 5 mg. Participants in the placebo group will receive tPA 4 mg followed by normal saline. Study treatments will be administered once daily for 3 days. All participants, parents or caregivers, clinicians, and research personnel will remain blinded. The primary outcome is length of stay from chest tube insertion to discharge from hospital. Secondary outcomes include time to meeting discharge criteria, chest tube duration, fever duration, need for additional procedures, adverse events, hospital readmission, cost of hospitalization, and mortality.
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Effect of ciprofloxacin on certain biochemical parameters in the blood serum of albino rats

Effect of ciprofloxacin on certain biochemical parameters in the blood serum of albino rats

known to produce free radicals. These free radicals are produced as a result of electron leakage due to the interaction of steroid products or other pseudosubstrates with the enzymes. The inability of the pseudosubstrate to be oxygenated promotes the release of reactive oxygen species (Peltola et al., 1996). In the present study also, the testicular superoxide dismutase activity was considerably lowered and lipid peroxidation increased after ciprofloxacin treatment suggesting the inhibition of testicular steroidogenesis due to free radical formation and oxidative stress as suggested by Kumar et al. (1990).
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Employment is maintained and sick days decreased in psoriasis/psoriatic arthritis patients with etanercept treatment

Employment is maintained and sick days decreased in psoriasis/psoriatic arthritis patients with etanercept treatment

Results: Employment was at least maintained from baseline to week 24 in both dose groups (56% [BIW/QW] and 60% [QW/QW] at baseline, 61% and 60%, respectively, at week 24). Among employed participants, the proportion of patients whose job responsibilities changed due to PsA decreased significantly from baseline to week 24 (17 – 23% to 5 – 8%; p < 0.01). Similar results were seen with job responsibility changes due to psoriasis (11 – 14% to 4%; p < 0.01). The number of monthly sick days also decreased from baseline to week 24 (2.4 days for both treatment groups to 0.7 (BIW/QW) and 1.1 (QW/QW); p ≤ 0.03 for each). No significant differences between the treatment groups were observed for any economic endpoint at any time point.
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Cervical spine involvement in patients with juvenile idiopathic arthritis - MRI follow-up study

Cervical spine involvement in patients with juvenile idiopathic arthritis - MRI follow-up study

with seronegative polyarticular JIA, 3 with extended oli- goarthritis) were excluded for a missing second (follow- up) MRI examination. The MRIs of these patients all showed joint hyperintensity and enhancement, with malalignment in 2 of them, and none showing ankylosis, erosion or narrowing of the spinal canal at the cranio- cervical junction. The remaining 13 patients (7 females) met the inclusion criteria of clinically and radiologically documented cervical spine arthritis by at least two ex- aminations. Median age at onset of JIA was 6 years (range 1.5 – 12), median age at diagnosis of cervical spine arthritis was 7.7 years (range 1.8 – 14), indicating a median disease duration of 1.7 years until the mani- festation of cervical spine arthritis. According to ILAR classification criteria for juvenile idiopathic arthritis [22] patients were diagnosed as extended oligoarthritis (6 pa- tients), seronegative polyarthritis (4 patients), psoriasis arthritis (2 patients), systemic arthritis (1 patient). ANA, HLA-B 27, rheumafactor positivity was seen in 8, 1 and no patients respectively.
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Long-term safety and tolerability of open-label aripiprazole augmentation of antidepressant therapy in major depressive disorder

Long-term safety and tolerability of open-label aripiprazole augmentation of antidepressant therapy in major depressive disorder

All rollover patients continued to receive their antidepressant therapy at the final prescribed dose in the previous trial in accordance with current product labeling, ie, escitalopram 10–20 mg/day, fluoxetine 20–40 mg/day, paroxetine con- trolled-release 37.5–50 mg/day (paroxetine 20–40 mg/day could be substituted if paroxetine controlled-release was not available), sertraline 100–150 mg/day, or venlafaxine extended-release 150–225 mg/day. De novo patients were permitted to receive these antidepressant therapies but could also receive bupropion sustained-release 300–400 mg/day, bupropion extended-release 150–450 mg/day, bupropion 300–450 mg/day, duloxetine 40–60 mg/day, or mirtazapine 15–45 mg/day. All patients were required to continue on their initial antidepressant therapy treatment and were not allowed to switch antidepressant medications during the course of open-label treatment. Dose adjustment of antidepressant therapy during the open-label treatment period was permitted for optimal therapeutic effect within the recommended dose range, although dose adjustment of antidepressant therapy should not be made within the same week as aripiprazole
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DiabCare Asia 2012: diabetes management, control, and complications in patients with type 2 diabetes in Indonesia

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This real-world study had certain limitations. First, this study was not randomized, and therefore, it was not possible to draw conclusions on the impact of treatment on diabetes control. Second, data on treatment adherence, hypoglycemia, and EQ-5D were self-reported, and the estimates may have been subject to recall bias. Third, data stratification of each primary, secondary, and tertiary care is not reported in the manuscript because subanalysis in more detail has not been done on the preparation of this manuscript. Further, because of the retrospective collection of laboratory findings, aside from HbA1c, it was not possible to fully assess the status of glycemic and lipid control in the entire study population.
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Optimally timing primaquine treatment to reduce Plasmodium falciparum transmission in low endemicity Thai Myanmar border populations

Optimally timing primaquine treatment to reduce Plasmodium falciparum transmission in low endemicity Thai Myanmar border populations

Mathematical modeling has been widely used to model transmission dynamics of malaria, and control interven- tions [46]. However, findings from the models require a careful interpretation. This study intends to construct sim- ple models that provide a valuable insight into the feasi- bility of malaria elimination in a low malaria transmission area. Results from the models should be considered as approximations that are likely to differ because of the natural variability under field conditions. In addition, although the model assumed that the level of individual infectiousness follows the log-sigmoid rela- tionship with the gametocyte density among non- immune adults, the duration of infectiousness in the anal- ysis may be underestimated. Infectivity to mosquitoes is observed even when gametocyte densities fall below detection level by microscopy or by a molecular method [24,47]. However, the trend of duration of infectiousness over different timings of primaquine administration does not change when different infectivity levels are applied. The model also does not take into account the additional gametocyte carriage from recrudescent infections. Though gametocytaemia is estimated to be greater in recrudescent infections than in primary infections, in an area where artesunate-mefloquine combination therapy is used, few recrudescent infections are expected [33,48]. Lastly, the model assumes that most infected individuals develop clinical symptoms and are treated. In low and unstable transmission areas this assumption is generally correct; however pockets of higher transmission may exist, and the importance of asymptomatic asexual blood-stage infections in these areas in continuing transmission over the dry season can be significant. While surveys suggest that there are basically no asymptomatic carriers in the region in question, studies in other areas have found that sub-patent infections can persist for many months [9,10,49]. Thus, while the models suggest that optimally- timed primaquine administration can significantly impact the incidence of malaria in a low-transmission area well served by health centers, asymptomatic individ- uals in the area and not just imported carriers may also play a significant role in sustaining transmission and should be considered in any elimination plan.
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Update on triple therapy for eradication of <em>Helicobacter pylori</em>: current status of the art

Update on triple therapy for eradication of <em>Helicobacter pylori</em>: current status of the art

While there are a large number of emerging therapies, no consensus has been reached on these, and no “magic bullet” has emerged for H. pylori eradication. The authors of this review believe that, at present, the optimal approach in the treatment of patients with H. pylori infection is to use whichever protocol the literature indicates has the highest eradication rates and shorter duration. The type of regimen chosen will vary depending on the level of clarithromycin resistance in the country concerned, so each country should periodically publish data on the outcomes of eradication regimens and the antibiotic resistance rates to facilitate the appropriate therapeutic choice.
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