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1.
Ann Oncol ; 21(3): 540-547, 2010 Mar.
Article in English | MEDLINE | ID: mdl-19833819

ABSTRACT

BACKGROUND: Paclitaxel-carboplatin is used as the standard regimen for patients with advanced or metastatic non-small-cell lung cancer (NSCLC). This trial was designed to compare gemcitabine + carboplatin or gemcitabine + paclitaxel to the standard regimen. PATIENTS AND METHODS: A total of 1135 chemonaive patients with stage IIIB or IV NSCLC were randomly allocated to receive gemcitabine 1000 mg/m(2) on days 1 and 8 plus carboplatin area under the concentration-time curve (AUC) 5.5 on day 1 (GC), gemcitabine 1000 mg/m(2) on days 1 and 8 plus paclitaxel 200 mg/m(2) on day 1 (GP), or paclitaxel 225 mg/m(2) plus carboplatin AUC 6.0 on day 1 (PC). Stratification was based on disease stage, baseline weight loss, and presence or absence of brain metastases. Cycles were repeated every 21 days for up to six cycles or disease progression. RESULTS: Median survival (months) with GC was 7.9 compared with 8.5 for GP and 8.7 for PC. Response rates (RRs) were as follows: GC, 25.3%; GP, 32.1%; and PC, 29.8%. The GC arm was associated with a greater incidence of grade 3 or 4 hematologic events but a lower rate of neurotoxicity and alopecia when compared with GP and PC. CONCLUSIONS: Non-platinum and non-paclitaxel gemcitabine-containing doublets demonstrate similar overall survival and RR compared with the standard PC regimen. However, the treatment arms had distinct toxicity profiles.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Brain Neoplasms/drug therapy , Carcinoma, Non-Small-Cell Lung/drug therapy , Lung Neoplasms/drug therapy , Adult , Aged , Aged, 80 and over , Brain Neoplasms/secondary , Carboplatin/administration & dosage , Carcinoma, Non-Small-Cell Lung/pathology , Deoxycytidine/administration & dosage , Deoxycytidine/analogs & derivatives , Female , Humans , Lung Neoplasms/pathology , Male , Middle Aged , Neoplasm Staging , Paclitaxel/administration & dosage , Prospective Studies , Survival Rate , Treatment Outcome , Gemcitabine
2.
J Am Acad Dermatol ; 45(1): 44-8, 2001 Jul.
Article in English | MEDLINE | ID: mdl-11423833

ABSTRACT

BACKGROUND: The Dermatology Life Quality Index (DLQI), a self-administered general dermatology quality of life instrument, was originally developed and published in a dermatology clinic at University Hospital of Wales. OBJECTIVE: Our goal was to test the feasibility of having patients answer the DLQI in a busy dermatology clinic and to find out to what extent results vary from those published in Wales. We also wanted to examine the validity of the index in terms of the correlation between DLQI scores and stage of illness (disease severity). METHODS: We administered the DLQI to 200 consecutive patients who were seen in a dermatology clinic at Indiana University Medical Center. Results were examined in light of results found by those who originated the DLQI. A pilot group of patients were given the DLQI and rated for severity of disease by means of the Dermatology Index of Disease Severity (DIDS). RESULTS: Overall, the DLQI is easy to administer and can be completed within 3 minutes. The scores in our study were compatible with those previously reported by the DLQI originators. There was a "ceiling" effect in that 11% of the patients indicated no quality of life impairment on the DLQI rating. This index shows stratification with severity of disease. CONCLUSION: The DLQI is an easy and efficient instrument for assessing quality of life in dermatology patients. Patients needed minimal assistance with the form. Our results were similar to those of the DLQI originators, and this further shows reliability and validity of the DLQI. In addition, this study further supports the use of DLQI as a quality of life instrument suitable for use in international studies.


Subject(s)
Quality of Life , Skin Diseases/complications , Surveys and Questionnaires , Adolescent , Adult , Aged , Aged, 80 and over , Dermatology , Female , Humans , Male , Middle Aged , Sensitivity and Specificity , Severity of Illness Index
3.
Ann Intern Med ; 134(2): 120-4, 2001 Jan 16.
Article in English | MEDLINE | ID: mdl-11177315

ABSTRACT

BACKGROUND: Although concomitant alcoholism is widely believed to enhance liver disease progression in persons with hepatitis C virus (HCV) infection, this relationship has not been well quantified. OBJECTIVE: To quantify the relationship of transfusion-associated HCV infection and history of heavy alcohol abuse to development of cirrhosis. DESIGN: Retrospective cohort study. SETTING: Liver clinics in university and government hospitals. PATIENTS: Extended follow-up of 1030 patients in prospective investigations of transfusion-associated viral hepatitis conducted in the United States between 1968 and 1980. MEASUREMENTS: Development of cirrhosis and history of heavy alcohol abuse were determined from review of interviews with patients or their proxies, medical records, death certificates, and autopsy and biopsy reports. Logistic regression was used to estimate the risk for cirrhosis associated with transfusion-associated HCV infection and history of heavy alcohol abuse. RESULTS: The absolute risk for cirrhosis was 17% among patients with transfusion-associated HCV; 3.2% among patients with transfusion-associated non-A, non-B, non-C hepatitis; and 2.8% among controls. Patients with transfusion-associated HCV were more likely than controls to develop cirrhosis (odds ratio, 7.8 [95% CI, 4.0 to 15.1]). A history of heavy alcohol abuse was associated with a fourfold increased risk for cirrhosis. Hepatitis C virus infection plus a history of heavy alcohol abuse led to a substantial increase in risk for cirrhosis (odds ratio, 31.1 [CI, 11.4 to 84.5]) compared with controls without such a history. CONCLUSIONS: Heavy alcohol abuse greatly exacerbates the risk for cirrhosis among patients with HCV infection. This finding emphasizes the need to counsel such patients about their drinking habits.


Subject(s)
Alcoholism/complications , Hepatitis C/complications , Liver Cirrhosis, Alcoholic/etiology , Adult , Case-Control Studies , Cohort Studies , Disease Progression , Female , Follow-Up Studies , Hepatitis C/etiology , Humans , Logistic Models , Male , Middle Aged , Retrospective Studies , Risk Factors , Transfusion Reaction
4.
J Biopharm Stat ; 10(1): 31-44, 2000 Feb.
Article in English | MEDLINE | ID: mdl-10709799

ABSTRACT

In bioequivalence studies, drug formulations are compared in terms of bioavailability parameters such as the area under the concentration-time curve (AUC), the maximum concentration (Cmax), and the time to maximum concentration (t(max)). Accuracy in measuring these parameters directly affects the accuracy of bioequivalence tests. Because the number of blood draws per patient is limited, the blood collection times must be spaced so that concentration-time curve measurements can produce accurate bioavailability parameter estimates. This paper describes an optimization approach for calculating optimal time designs for one-compartment models, but is sufficiently general for other compartmental models. Simulation indicates that the optimal design improves the accuracy of AUC estimation.


Subject(s)
Models, Biological , Therapeutic Equivalency , Area Under Curve , Biological Availability , Body Fluid Compartments , Computer Simulation , Humans , Mathematical Computing , Randomized Controlled Trials as Topic/methods
5.
Comput Methods Programs Biomed ; 61(3): 187-94, 2000 Mar.
Article in English | MEDLINE | ID: mdl-10710181

ABSTRACT

We present code for the calculation and evaluation of continuously monitored stopping boundaries for use in one-arm and two-arm clinical trials. These designs were first developed for one-arm trials by Thall, Simon and Estey (TSE) (P.F. Thall, R. Simon, E.H. Estey, Bayesian sequential monitoring designs for single-arm clinical trials with multiple outcomes, Stat. Med. 14 (1995) 357-379). Our code corrects some problems in the original TSE algorithms and extends these algorithms for use in a two-arm trial setting. It is written in S-Plus to improve interactivity for the statistically adept user, and employs external routines, dynamically loaded into S-Plus, to improve calculation efficiency. Efficient versions of our code require both a C compiler and the S-Plus program. Our code has been tested in UNIX and Microsoft Windows environments, and compiled code is available from our website. A numerical integration routine for the convolution of beta distributions is included.


Subject(s)
Clinical Trials as Topic , Software , Clinical Trials, Phase II as Topic , Humans , Mathematical Computing , Outcome and Process Assessment, Health Care , Randomized Controlled Trials as Topic
6.
Am J Clin Oncol ; 23(1): 68-70, 2000 Feb.
Article in English | MEDLINE | ID: mdl-10683082

ABSTRACT

Forty-six evaluable patients with recurrent small-cell lung cancer were entered on a phase II Hoosier Oncology Group (HOG) protocol evaluating bolus doxorubicin 40 mg/m2 followed by paclitaxel 175 mg/m2 over 3 hours. Courses were repeated every 3 weeks for a maximum of 6 courses. Therapy was well-tolerated with grade III neurotoxicity in 5 patients (11%), grade III/IV emesis in 5 (11%), and grade III mucositis in 2 patients. One patient had grade IV myalgias and one patient had grade III cardiotoxicity. The main toxicity was myelosuppression. Twenty-nine patients (63%) had grade IV and 8 (17%) grade III granulocytopenia. Nine patients (20%) were hospitalized for granulocytopenic fever. There was no treatment-related mortality. Nineteen of 46 patients (41%) had an objective response, including 3 complete remissions. Two of 14 patients with refractory disease (progression less than 3 months after initial therapy) responded, compared to 17 of 32 (52%) with sensitive disease (progression beyond 3 months of initial chemotherapy regimen).


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Carcinoma, Small Cell/drug therapy , Lung Neoplasms/drug therapy , Neoplasm Recurrence, Local/drug therapy , Adult , Aged , Carcinoma, Small Cell/secondary , Doxorubicin/administration & dosage , Female , Humans , Lung Neoplasms/pathology , Male , Middle Aged , Paclitaxel/administration & dosage , Survival Analysis
7.
Clin Radiol ; 53(7): 506-9, 1998 Jul.
Article in English | MEDLINE | ID: mdl-9714390

ABSTRACT

OBJECTIVE: To determine the effect of breathing on the detection of small dense pulmonary nodules of threshold conspicuity by spiral computed tomography (SCT). MATERIALS AND METHODS: Forty pulmonary nodules of high density were created by endobronchial deployment of 2 and 4mm diameter beads in the peripheral airways of five anaesthetized dogs. SCT was performed during induced breath-hold and quiet breathing, using 5 mm collimation, pitch 2 and reconstruction of contiguous 5 mm slices. Scans were reviewed by six radiologists. Detection rates were measured as the number of nodules seen by at least one reader. The data was modelled using ordinal logistic regression for repeated measures, and the Wald Chi-square statistic used to test if there was a breath-hold vs. breathing effect on reader confidence level. RESULTS: There was no difference in detection rates for breath-hold vs. breathing SCT (28 vs. 25, respectively; P=0.48). This was also true when only the 2 mm nodules (n=24) were considered (12 vs. 11, respectively; P=0.77). Reader confidence level was significantly higher for breath-hold vs. breathing SCT (Wald Chi-square statistic with 6 degrees of freedom=19.0; P=0.0041). CONCLUSION: SCT can be performed during quiet breathing without a significant reduction the overall detection rate for small dense pulmonary nodules, though reader diagnostic confidence level is reduced.


Subject(s)
Lung Diseases/diagnostic imaging , Lung/diagnostic imaging , Respiration , Tomography, X-Ray Computed , Animals , Dogs , Tomography, X-Ray Computed/methods
8.
J Clin Oncol ; 16(7): 2500-4, 1998 Jul.
Article in English | MEDLINE | ID: mdl-9667270

ABSTRACT

PURPOSE: This study was designed to assess the effectiveness of vinblastine, ifosfamide, and cisplatin (VeIP) as second-line therapy in patients with recurrent germ cell tumors with previous treatment with cisplatin plus etoposide, usually in combination with bleomycin. PATIENTS AND METHODS: From July 1984 through December 1989, 135 patients with progressive, disseminated germ cell tumors after cisplatin-etoposide-based combination therapy induction chemotherapy were treated with VeIP. Patients who progressed within 3 weeks of previous cisplatin therapy were not eligible. Progression was documented by biopsy or increasing serum markers. No exclusion was made on the basis of metastatic site or performance status. The dosages were vinblastine 0.11 mg/kg/d (days 1 and 2), ifosfamide 1.2 gm/m2/d (days 1 through 5), and cisplatin 20 mg/m2/d (days 1 through 5), with courses repeated every 21 days for four cycles. RESULTS: Sixty-seven (49.6%) patients achieved a disease-free status after chemotherapy with or without surgical resection of residual carcinoma or teratoma. Overall, 42 (32%) patients are alive and 32 (23.7%) are continuously free of disease. None of the 32 patients with nonseminomatous extragonadal tumors are disease-free compared with 30 of 100 patients with gonadal primaries. Two of three extragonadal seminomas are continuously disease-free. CONCLUSION: VeIP is capable of producing durable complete remissions in patients with disseminated germ cell cancer who relapse after cisplatin-etoposide-based induction therapy. Long-term disease-free survival is not seen in those patients with extragonadal nonseminomatous germ cell tumors.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Germinoma/drug therapy , Child , Child, Preschool , Cisplatin/administration & dosage , Disease-Free Survival , Female , Germinoma/secondary , Humans , Ifosfamide/administration & dosage , Infant , Male , Salvage Therapy , Survival Analysis , Treatment Outcome , Vinblastine/administration & dosage
9.
Br J Radiol ; 71(842): 135-40, 1998 Feb.
Article in English | MEDLINE | ID: mdl-9579176

ABSTRACT

This study was undertaken to investigate the use of maximum intensity projection (MIP) images in the detection of pulmonary nodules by spiral CT (SCT). 40 pulmonary nodules of high density were created by endobronchial deployment of 2 and 4 mm beads in the peripheral airways of five anesthetized dogs. Standard SCT was performed with 5 mm collimation, pitch 2 and reconstruction of contiguous slices. MIP images were generated from overlapped slabs of seven consecutive 3 mm slices, reconstructed at 2 mm intervals and acquired at pitch 2. Scans were reviewed by six radiologists. The data were modelled using ordinal logistic regression for repeated measures, and the Wald chi 2 statistic used to test if there was a difference in nodule detection and reader confidence level between the two techniques. MIP imaging increased the odds of nodule detection by 2.18 (p = 0.0002). Reader confidence level for nodule detection was significantly higher with MIP images (p < 0.00001). MIP images improve the detection rate for small high density pulmonary nodules and increase reader confidence level, when compared with standard SCT.


Subject(s)
Image Processing, Computer-Assisted/methods , Lung Neoplasms/diagnostic imaging , Lung Neoplasms/secondary , Tomography, X-Ray Computed/methods , Animals , Disease Models, Animal , Dogs , Logistic Models , Microspheres
10.
Clin Cancer Res ; 4(4): 935-9, 1998 Apr.
Article in English | MEDLINE | ID: mdl-9563887

ABSTRACT

The purpose of this study was to compare the objective response rate, duration of remission, and survival of 5-fluorouracil (5-FU) versus those of 5-FU plus levamisole in metastatic colorectal cancer using the same dose and schedule of these agents as in the North Central Cancer Treatment Group and intergroup studies of adjuvant therapy. Patients with no prior history of chemotherapy for metastatic disease were entered on this Hoosier Oncology Group randomized Phase III trial. Patients were stratified by Karnofsky performance status and presence or absence of liver metastases. They were randomized to receive 450 mg/m2 5-FU i.v. for 5 days followed by 15 mg/kg i.v. weekly (arm 1) or the same dose of 5-FU plus levamisole 50 mg p.o. every 8 h for 3 days every 2 weeks (arm 2). The duration of treatment for both arms was 26 weeks. From April 1990 to March 1995, 199 patients were entered. One hundred eighty-two patients, 91 in each arm, were fully evaluable. The response rates were 12% on arm 1 and 13% on arm 2. The median duration of response was 18 weeks on both arms. The median survival was 48 weeks on arm 1 and 41 weeks on arm 2 (P = 0.20). This study failed to show any improvement in survival, response, or duration of remission with the addition of levamisole to 5-FU in the treatment of metastatic colorectal cancer.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Carcinoma/drug therapy , Colorectal Neoplasms/drug therapy , Liver Neoplasms/drug therapy , Adult , Aged , Aged, 80 and over , Agranulocytosis/chemically induced , Anemia/chemically induced , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Carcinoma/secondary , Colorectal Neoplasms/pathology , Double-Blind Method , Female , Fluorouracil/administration & dosage , Fluorouracil/adverse effects , Humans , Levamisole/administration & dosage , Levamisole/adverse effects , Liver Neoplasms/secondary , Male , Middle Aged , Neoplasm Invasiveness , Prospective Studies , Survival Rate
11.
J Comput Assist Tomogr ; 22(2): 235-40, 1998.
Article in English | MEDLINE | ID: mdl-9530386

ABSTRACT

PURPOSE: We sought to determine the accuracy of helical CT in the detection of pulmonary metastases. METHOD: Four anesthetized dogs with metastatic osteosarcoma underwent helical CT with a collimation of 5 mm, a pitch of 2, and a reconstruction interval of 5 mm. All macroscopically evident metastases were recorded at autopsy. CT images were independently reviewed by 10 radiologists and compared with pathologic results. Alternate slices in the dog with the most metastases were microscopically examined in their entirety. RESULTS: Pathologic examination of the lungs revealed 132 macroscopically evident pulmonary metastases, of which 74 (56%) were detected by at least one reader. Forty-four of the 99 (44%) metastases of < or = 5 mm in diameter were detected by at least one reader compared with 30 of 33 (91%) metastases of > 5 mm in diameter (p < 0.0001). The 10 readers reported a total of 107 false positives. Complete microscopy of alternate slices in the dog with the most metastases (n = 68) revealed an additional 38 micrometastases of < or = 3 mm in diameter. None of the 32 micrometastases of < or = 1 mm were detected by CT. CONCLUSION: Helical CT has some limitations in the detection of pulmonary metastases.


Subject(s)
Dog Diseases/diagnostic imaging , Lung Neoplasms/diagnostic imaging , Lung Neoplasms/secondary , Tomography, X-Ray Computed/methods , Animals , Bone Neoplasms/diagnostic imaging , Bone Neoplasms/pathology , Bone Neoplasms/veterinary , Dog Diseases/pathology , Dogs , Lung/diagnostic imaging , Lung/pathology , Lung Neoplasms/pathology , Lung Neoplasms/veterinary , Observer Variation , Osteosarcoma/diagnostic imaging , Osteosarcoma/pathology , Osteosarcoma/veterinary , Tomography, X-Ray Computed/statistics & numerical data , Tomography, X-Ray Computed/veterinary
12.
Am J Clin Oncol ; 21(2): 180-4, 1998 Apr.
Article in English | MEDLINE | ID: mdl-9537208

ABSTRACT

To determine the maximally tolerated dose of paclitaxel with and without filgrastim (G-CSF) when administered as a 24-hour intravenous infusion after a 120-hour infusion of gallium nitrate at a fixed dose of 300 mg/m2/24 hours, 40 patients were entered onto a trial lasting from September 1994 to September 1996. Eligibility included a diagnosis of an advanced malignancy not amenable to curative therapy and up to one previous chemotherapy regimen for metastatic disease. Gallium was administered at a fixed dose of 300 mg/m2/day as a continuous intravenous infusion for 120 hours. Paclitaxel starting at 90 mg/m2 was given concurrently with the last 24 hours of the gallium as a 24-hour intravenous infusion. Cycles were repeated every 21 days. Once the maximum tolerated dose (MTD) of paclitaxel was reached, G-CSF (5 microg/kg/day days 7-16) was added and paclitaxel dose escalation continued. The MTD for paclitaxel without G-CSF was 110 mg/m2 and 225 mg/m2 with G-CSF, with neutropenia being the dose-limiting toxicity. A partial response was noted in a patient who had thymoma and a complete response was achieved in a patient who had colon cancer. The recommended phase II dosage is gallium nitrate at 300 mg/m2/day over 120 hours, with paclitaxel at 110 mg/m2 over 24 hours without G-CSF or 225 mg/m2 over 24 hours with G-CSF and 0.5 mg calcitriol on days 1 through 7. Further trials of this modified regimen for outpatient administration are in progress.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Adult , Aged , Drug Administration Schedule , Female , Filgrastim , Gallium/administration & dosage , Granulocyte Colony-Stimulating Factor/administration & dosage , Humans , Infusions, Intravenous , Male , Middle Aged , Paclitaxel/administration & dosage , Recombinant Proteins
13.
Bone Marrow Transplant ; 21(1): 65-71, 1998 Jan.
Article in English | MEDLINE | ID: mdl-9486497

ABSTRACT

Bone marrow cells expressing the surface antigen CD34 comprise approximately 1% of harvested marrow and are highly enriched for marrow progenitor cells, including the cells believed to be responsible for long-term engraftment following bone marrow transplantation (BMT). Selection of CD34-expressing cells was applied in allogeneic BMT (alloBMT) to decrease the number of T lymphocytes in the infused marrow in an attempt to prevent severe graft-versus-host disease (GVHD). We report 14 patients who underwent HLA-identical sibling-matched alloBMT with marrow-enriched for CD34 cells using the Isolex 300 SA device. Patients received total body irradiation, thiotepa, cyclophosphamide, antithymocyte globulin and methylprednisolone prior to marrow infusion. No post-transplantation immunosuppressive therapy was given except for a 5-week course of steroids. The purity of the infused marrow was 64.9+/-6.0% (mean +/- s.e.m.) CD34-positive cells and patients received a mean of 1.24+/-0.21 x 10(6) CD34 cells/kg. A mean of 9.4+/-1.7 x 10(4) CD3 T cells/kg were present in the CD34-enriched product, representing a 2.7+/-0.1 log depletion. There were no graft rejections and patients achieved a sustained absolute granulocyte count of >500 in a median of 10.5 days and a sustained platelet engraftment of >20000 untransfused in a median of 27 days. Patients were discharged a median of 21.5 days after marrow infusion. There were no instances of grade III or IV graft-versus-host disease (GVHD) and no unexpected adverse events during the transplant hospitalization. With a median follow-up of 12 months, the estimated 100 day survival is 86+/-9%. CD34 selection in alloBMT permits rapid engraftment without unanticipated toxicities.


Subject(s)
Antigens, CD34/analysis , Bone Marrow Transplantation , Adolescent , Adult , Female , Graft vs Host Disease/etiology , Humans , Lymphocyte Depletion , Male , Middle Aged , Polymerase Chain Reaction , Polymorphism, Restriction Fragment Length , Transplantation, Homologous
14.
J Clin Oncol ; 16(2): 702-6, 1998 Feb.
Article in English | MEDLINE | ID: mdl-9469360

ABSTRACT

PURPOSE: In a previously reported randomized Southeastern Cancer Study Group (SECSG) trial, three cycles of chemotherapy were found to be equivalent to four cycles in patients with favorable-prognosis germ-cell cancer. We have conducted a follow-up analysis of patients treated at Indiana University (Indianapolis, IN) to compare long-term survival between the two groups and to examine factors associated with survival. PATIENTS AND METHODS: Sixty-nine patients with minimal-stage and 49 patients with moderate-stage disseminated germ-cell tumors were randomized to either three or four courses of bleomycin, etoposide, and cisplatin (BEP) administered every 3 weeks. Median follow-up time is 10.1 years (range, 7 months to 12.6 years). Ninety-two percent of patients have an actual follow-up time of > 5 years, and 97.5% of patients have an actual follow-up time of > 3 years. RESULTS: Survival analysis shows no significant difference between the two treatment groups in terms of overall (P = .80) or disease-free (P = .93) survival. Several clinical variables were examined by univariate analysis; only serum human chorionic gonadotropin (HCG) had an impact on survival. There were two disease-related deaths in 104 patients with HCG < or = 1,000 mIU/mL and five disease-related deaths in 14 patients with HCG greater than 1,000 mIU/mL (P < .001). Ninety-eight percent (95% CI, 95.2 to 100) of patients with favorable prognosis germ-cell tumor with an initial HCG of < or = 1,000 mIU/mL are alive without evidence of disease at 5+ years. CONCLUSION: With long-term follow-up, there is no statistically significant difference in survival between three or four cycles of BEP chemotherapy in patients with favorable prognosis germ-cell carcinoma. Serum HCG elevation of greater than 1,000 mIU/mL is a significant predictor of poor outcome in patients with otherwise good-risk disease.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Germinoma/drug therapy , Adolescent , Adult , Biomarkers, Tumor/blood , Bleomycin/administration & dosage , Chorionic Gonadotropin/blood , Cisplatin/administration & dosage , Drug Administration Schedule , Etoposide/administration & dosage , Follow-Up Studies , Germinoma/blood , Germinoma/mortality , Germinoma/pathology , Humans , Male , Middle Aged , Prognosis , Survival Rate
15.
Arch Dermatol ; 133(11): 1443-8, 1997 Nov.
Article in English | MEDLINE | ID: mdl-9371030

ABSTRACT

OBJECTIVES: To describe a new severity of illness index for inflammatory skin disease called the Dermatology Index of Disease Severity (DIDS), and to show its preliminary use and reliability in staging disease in patients with psoriasis and dermatitis. DESIGN: Interobserver rating study using the DIDS with as many as 10 observers independently rating the same patient at a single point in time. SETTING: Ambulatory care clinics at an academic medical center with patients from various socioeconomic backgrounds. PATIENTS: Thirty-four patients with psoriasis and 15 patients with dermatitis were included in the study. MAIN OUTCOME MEASURES: The severity of illness for each patient was rated as 1 of 5 stages: 0, no evidence of clinical disease; I, limited disease; II, mild disease; III, moderate disease; and IV, severe disease. The degree of interobserver concordance was measured by the Cohen kappa statistic. RESULTS: All 5 stages were represented in the study of patients with psoriasis. The overall kappa statistic was 0.76, which is defined as substantial interobserver concordance. The use of the instrument in dermatitis showed good consensus in staging, where the kappa statistic was 0.41. CONCLUSION: We introduce an easy and efficient instrument for staging the severity of illness in inflammatory cutaneous diseases. The reliability of the DIDS is demonstrated in patients with psoriasis and in patients with dermatitis.


Subject(s)
Dermatitis/diagnosis , Psoriasis/diagnosis , Severity of Illness Index , Adult , Humans , Reproducibility of Results
16.
J Am Acad Dermatol ; 37(4): 570-4, 1997 Oct.
Article in English | MEDLINE | ID: mdl-9344195

ABSTRACT

BACKGROUND: Acne mechanica (AM) is common in football players. Severe cases of nuchal AM may precede acne keloidalis nuchae (AKN). Factors that may be associated with the progression of nuchal AM to AKN are unknown. The prevalence of AKN in football players has not been reported. OBJECTIVE: We investigated the frequency of nuchal AM and AKN within a susceptible population and attempted to identify factors that may be associated with AKN. METHODS: Four hundred fifty-three high school, collegiate, and professional football players were examined for the presence of nuchal AM or AKN. Those with positive findings completed a questionnaire regarding their disease. RESULTS: Nuchal AM was more prevalent in high school players (15.5%) than older players (1.2%). AKN was more frequent in players beyond the high school level and was found exclusively in blacks. AKN was not associated with a positive family history of AKN nor a positive personal or family history of keloid formation. CONCLUSION: AKN occurs almost exclusively in blacks. The level of football play may be associated with the development of AKN. Positive family history of AKN and positive family or personal history of keloids is not associated with AKN development.


Subject(s)
Acne Keloid/epidemiology , Football/statistics & numerical data , Scalp Dermatoses/epidemiology , Acne Keloid/genetics , Acne Vulgaris/epidemiology , Adolescent , Adult , Age Factors , Analysis of Variance , Black People , Confidence Intervals , Disease Progression , Disease Susceptibility , Humans , Indiana/epidemiology , Keloid/epidemiology , Keloid/genetics , Logistic Models , Male , Prevalence , Risk Factors , Scalp Dermatoses/genetics , Surveys and Questionnaires , White People
17.
Stat Med ; 16(17): 1925-41, 1997 Sep 15.
Article in English | MEDLINE | ID: mdl-9304764

ABSTRACT

Thall et al. consider a continuous monitoring strategy for multiple discrete outcomes to determine whether a trial should terminate early. We evaluate important issues raised in the application of a continuous monitoring strategy for multiple outcomes. Specifically, we evaluate: (i) the sensitivity of such a methodology to small perturbations in the stopping boundaries; (ii) the need to employ accrual buffers when a trial approaches a stopping boundary-a large buffer implying that temporary suspension is unwarranted; and (iii) the role of association among the multiple outcomes of interest. Simulation studies demonstrate that the methodology is sensitive to small perturbations in the stopping boundaries, that the size of an accrual buffer can vary widely over the course of a trial, and that the extent of association among multiple outcomes plays a large role in determining the stopping properties of a trial. We illustrate these issues using the HLA non-identical donor bone marrow transplant trial, with two discrete outcomes.


Subject(s)
Bayes Theorem , Clinical Trials, Phase II as Topic/statistics & numerical data , Research Design , Humans , Models, Statistical , Sample Size , Sensitivity and Specificity , Treatment Outcome
18.
Pediatr Radiol ; 27(7): 576-9, 1997 Jul.
Article in English | MEDLINE | ID: mdl-9211948

ABSTRACT

BACKGROUND: CT of the chest for suspected pulmonary metastases in adults is generally performed using a breath-hold technique. The results may not be applicable to young children in whom breath-holding may be impossible. OBJECTIVE: Determine the effect of breathing on the accuracy of pulmonary metastasis detection by spiral CT (SCT). MATERIALS AND METHODS: Prior to euthanasia four anesthetized dogs with metastatic osteosarcoma underwent SCT with a collimation of 5 mm and a pitch of 2, during both induced breath-hold and normal quiet breathing. Images were reconstructed as contiguous 5-mm slices. Macroscopically evident metastases were noted at postmortem. Hard-copy SCT images were reviewed by ten radiologists, each of whom circled all suspected metastases. SCT images were compared with postmortem results to determine true and false positives. RESULTS: The pathologist identified 132 macroscopically evident pulmonary metastases. For metastasis detection, there was no significant difference between breath-hold SCT and breathing SCT. CONCLUSION: In our animal model, SCT can be performed during normal resting breathing without significant loss of accuracy in the detection of pulmonary metastases.


Subject(s)
Lung Neoplasms/diagnostic imaging , Lung Neoplasms/secondary , Osteosarcoma/diagnostic imaging , Osteosarcoma/secondary , Respiration , Tomography, X-Ray Computed , Animals , Bone Neoplasms/pathology , Dogs , Lung Neoplasms/pathology , Osteosarcoma/pathology , Tomography, X-Ray Computed/methods
19.
J Am Acad Dermatol ; 36(6 Pt 1): 999-1006, 1997 Jun.
Article in English | MEDLINE | ID: mdl-9204068

ABSTRACT

During the past few years there has been significant interest in studying methods that document outcomes of medical care. Outcomes management should result in higher quality health care at lower cost. However, what does outcomes research mean and how does it apply to dermatology and specifically to the individual dermatologist? This article reviews the evolution of medical outcomes research and presents the status of the current instruments, indices, and methods.


Subject(s)
Outcome Assessment, Health Care , Dermatology , Humans , Outcome Assessment, Health Care/trends , Quality Assurance, Health Care , Quality of Life , Skin Diseases/classification , Skin Diseases/therapy
20.
J Clin Oncol ; 15(4): 1427-31, 1997 Apr.
Article in English | MEDLINE | ID: mdl-9193335

ABSTRACT

PURPOSE: Salvage therapy for disseminated germ cell tumors of all histologic subtypes with vinblastine, ifosfamide, and cisplatin (VeIP) will cure approximately 25% of patients. The purpose of this study was to evaluate the activity of VeIP in patients with recurrent seminoma. PATIENTS AND METHODS: We conducted a retrospective review of 24 patients with recurrent seminoma who were treated at Indiana University with VeIP as second-line chemotherapy. All patients had received cisplatin-containing regimens as primary chemotherapy and seven had also received prior pelvic radiotherapy. All patients received four courses of VeIP. RESULTS: The minimum follow-up duration was 2 years (range, 2 to 9.1), with a median follow-up time of 7 years. Twenty of 24 patients (83%) achieved a complete remission (CR) following VeIP alone. One additional patient was rendered disease-free (NED) with the resection of residual carcinoma. Eight patients have relapsed. Four of six patients with extragonadal primary tumors and two of four who failed to achieve CR with initial chemotherapy are continuously NED with VeIP. Overall, 13 of 24 (54%) are long-term survivors with VeIP salvage chemotherapy. CONCLUSION: VeIP has significant curative potential in patients with recurrent seminoma and appears to produce a higher CR rate and more long-term survivors than is achieved in patients with nonseminomatous disease.


Subject(s)
Antineoplastic Combined Chemotherapy Protocols/therapeutic use , Seminoma/drug therapy , Adult , Antineoplastic Agents, Alkylating/administration & dosage , Antineoplastic Agents, Phytogenic/administration & dosage , Antineoplastic Combined Chemotherapy Protocols/adverse effects , Cisplatin/administration & dosage , Drug Administration Schedule , Humans , Ifosfamide/administration & dosage , Male , Middle Aged , Recurrence , Retrospective Studies , Salvage Therapy , Survival Analysis , Treatment Outcome , Vinblastine/administration & dosage
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