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  • 1
    Online Resource
    Online Resource
    Collapse of the Chirajara Cable-Stayed Bridge in Colombia
    SAGE Publications ; 2022
    In:  Transportation Research Record: Journal of the Transportation Research Board
    Details
    In: Transportation Research Record: Journal of the Transportation Research Board, SAGE Publications
    Abstract: The Chirajara Bridge is part of a highway project located about 40 mi to the southeast of Bogota, Colombia. The collapsed structure was a cable-stayed bridge consisting of two diamond-shaped towers, with a main span length of 940 ft and two side spans of 262 ft. On January 15, 2018, while under construction and with only 164 ft of the floor system remaining to be constructed between the towers, the western tower suddenly collapsed, destroying that part of the bridge. The other tower remained standing, approximately in the same construction stage as the collapsed tower. Modjeski and Masters was engaged one week after the collapse to conduct a forensic investigation that included: an in situ inspection of the collapsed structure, analytical studies, an evaluation of the design, a review of the construction documentation, and testing of materials from critical structural components. Global analyses were performed to determine the loading effects in the bridge before collapse, and refined nonlinear analyses were conducted to estimate the capacity of the tower and to identify the failure mode. The investigation was concluded 4 months after the collapse and, based on the resulting data, the cause of the collapse was determined to be a deficiency in the strength of the tower. The design erroneously assumed that the reinforcing along most of the height of the diaphragm between the lower legs of the tower was effective to resist the horizontal tensile force caused by the tower’s geometry, as opposed to typical practice which utilizes a tension tie at the change in direction of the tower legs.
    Type of Medium: Online Resource
    ISSN: 0361-1981 , 2169-4052
    URL: Article
    DOI: 10.1177/03611981221111351
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2403378-9
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  • 2
    Online Resource
    Online Resource
    A Parametric Study of the Delay-Retention Effect
    SAGE Publications ; 1967
    In:  Psychological Reports Vol. 20, No. 2 ( 1967-04), p. 433-434
    Details
    In: Psychological Reports, SAGE Publications, Vol. 20, No. 2 ( 1967-04), p. 433-434
    Abstract: The delay-retention effect—the facilitation of retention following reinforcement delay during acquisition—still appears when the value of delay is as long as 30 sec.
    Type of Medium: Online Resource
    ISSN: 0033-2941 , 1558-691X
    URL: Article
    DOI: 10.2466/pr0.1967.20.2.433
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1967
    detail.hit.zdb_id: 2066930-6
    SSG: 5,2
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  • 3
    Online Resource
    Online Resource
    Minimizing Juvenile Delinquency: Implications for Prevention Programs
    SAGE Publications ; 1982
    In:  The Journal of Early Adolescence Vol. 2, No. 2 ( 1982-05), p. 105-117
    Details
    In: The Journal of Early Adolescence, SAGE Publications, Vol. 2, No. 2 ( 1982-05), p. 105-117
    Type of Medium: Online Resource
    ISSN: 0272-4316 , 1552-5449
    URL: Article
    DOI: 10.1177/027243168200200202
    Language: English
    Publisher: SAGE Publications
    Publication Date: 1982
    detail.hit.zdb_id: 2011499-0
    SSG: 5,2
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  • 4
    Online Resource
    Online Resource
    Association of Surge Conditions with Mortality Among Critically Ill Patients with COVID-19
    SAGE Publications ; 2022
    In:  Journal of Intensive Care Medicine Vol. 37, No. 4 ( 2022-04), p. 500-509
    Details
    In: Journal of Intensive Care Medicine, SAGE Publications, Vol. 37, No. 4 ( 2022-04), p. 500-509
    Abstract: To determine whether surge conditions were associated with increased mortality. Design Multicenter cohort study. Setting U.S. ICUs participating in STOP-COVID. Patients Consecutive adults with COVID-19 admitted to participating ICUs between March 4 and July 1, 2020. Interventions None Measurements and Main Results The main outcome was 28-day in-hospital mortality. To assess the association between admission to an ICU during a surge period and mortality, we used two different strategies: (1) an inverse probability weighted difference-in-differences model limited to appropriately matched surge and non-surge patients and (2) a meta-regression of 50 multivariable difference-in-differences models (each based on sets of randomly matched surge- and non-surge hospitals). In the first analysis, we considered a single surge period for the cohort (March 23 – May 6). In the second, each surge hospital had its own surge period (which was compared to the same time periods in matched non-surge hospitals). Our cohort consisted of 4342 ICU patients (average age 60.8 [sd 14.8], 63.5% men) in 53 U.S. hospitals. Of these, 13 hospitals encountered surge conditions. In analysis 1, the increase in mortality seen during surge was not statistically significant (odds ratio [95% CI] : 1.30 [0.47-3.58], p = .6). In analysis 2, surge was associated with an increased odds of death (odds ratio 1.39 [95% CI, 1.34-1.43] , p  〈  .001). Conclusions Admission to an ICU with COVID-19 in a hospital that is experiencing surge conditions may be associated with an increased odds of death. Given the high incidence of COVID-19, such increases would translate into substantial excess mortality.
    Type of Medium: Online Resource
    ISSN: 0885-0666 , 1525-1489
    URL: Article
    DOI: 10.1177/08850666211067509
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2022
    detail.hit.zdb_id: 2001472-7
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  • 5
    Online Resource
    Online Resource
    Subchondral Pathology: Proceedings of the International Consensus Meeting on Cartilage Repair of the Ankle
    SAGE Publications ; 2018
    In:  Foot & Ankle International Vol. 39, No. 1_suppl ( 2018-07), p. 48S-53S
    Details
    In: Foot & Ankle International, SAGE Publications, Vol. 39, No. 1_suppl ( 2018-07), p. 48S-53S
    Abstract: The evidence supporting best practice guidelines in the field of cartilage repair of the ankle are based on both low quality and low levels of evidence. Therefore, an international consensus group of experts was convened to collaboratively advance toward consensus opinions based on the best available evidence on key topics within cartilage repair of the ankle. The purpose of this article is to report the consensus statements on “Subchondral Pathology” developed at the 2017 International Consensus Meeting on Cartilage Repair of the Ankle. Methods: Seventy-five international experts in cartilage repair of the ankle representing 25 countries and 1 territory were convened and participated in a process based on the Delphi method of achieving consensus. Questions and statements were drafted within 11 working groups focusing on specific topics within cartilage repair of the ankle, after which a comprehensive literature review was performed and the available evidence for each statement was graded. Discussion and debate occurred in cases where statements were not agreed upon in unanimous fashion within the working groups. A final vote was then held, and the strength of consensus was characterized as follows: consensus, 51% to 74%; strong consensus, 75% to 99%; unanimous, 100%. Results: A total of 9 statements on subchondral pathology reached consensus during the 2017 International Consensus Meeting on Cartilage Repair of the Ankle. No statements achieved unanimous support, but all statements reached strong consensus (greater than 75% agreement). All statements reached at least 81% agreement. Conclusions: This international consensus statements regarding subchondral pathology of the talus derived from leaders in the field will assist clinicians in the assessment and management of this difficult pathology.
    Type of Medium: Online Resource
    ISSN: 1071-1007 , 1944-7876
    URL: Article
    DOI: 10.1177/1071100718781866
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2129503-7
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  • 6
    Online Resource
    Online Resource
    Post-treatment Follow-up, Imaging, and Outcome Scores: Proceedings of the International Consensus Meeting on Cartilage Repair of the Ankle
    SAGE Publications ; 2018
    In:  Foot & Ankle International Vol. 39, No. 1_suppl ( 2018-07), p. 68S-73S
    Details
    In: Foot & Ankle International, SAGE Publications, Vol. 39, No. 1_suppl ( 2018-07), p. 68S-73S
    Abstract: The evidence supporting best practice guidelines in the field of cartilage repair of the ankle are based on both low quality and low levels of evidence. Therefore, an international consensus group of experts was convened to collaboratively advance toward consensus opinions based on the best available evidence on key topics within cartilage repair of the ankle. The purpose of this article is to report the consensus statements on Post-treatment Follow-up, Imaging and Outcome Scores developed at the 2017 International Consensus Meeting on Cartilage Repair of the Ankle. Methods: Seventy-five international experts in cartilage repair of the ankle representing 25 countries and 1 territory were convened and participated in a process based on the Delphi method of achieving consensus. Questions and statements were drafted within 11 working groups focusing on specific topics within cartilage repair of the ankle, after which a comprehensive literature review was performed and the available evidence for each statement was graded. Discussion and debate occurred in cases where statements were not agreed on in unanimous fashion within the working groups. A final vote was then held, and the strength of consensus was characterized as follows: consensus, 51% to 74%; strong consensus, 75% to 99%; unanimous, 100%. Results: A total of 12 statements on Post-treatment Follow-up, Imaging, and Outcome Scores reached consensus during the 2017 International Consensus Meeting on Cartilage Repair of the Ankle. All 12 statements reached strong consensus (greater than 75% agreement). Conclusions: This international consensus derived from leaders in the field will assist clinicians with post-treatment follow-up, imaging, and outcome scores after management of a cartilage injury of the ankle in the general population. Moreover, healing, rehabilitation, and final outcomes can be optimized for the individual patient.
    Type of Medium: Online Resource
    ISSN: 1071-1007 , 1944-7876
    URL: Article
    DOI: 10.1177/1071100718781861
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2129503-7
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  • 7
    Online Resource
    Online Resource
    Conservative Management and Biological Treatment Strategies: Proceedings of the International Consensus Meeting on Cartilage Repair of the Ankle
    SAGE Publications ; 2018
    In:  Foot & Ankle International Vol. 39, No. 1_suppl ( 2018-07), p. 9S-15S
    Details
    In: Foot & Ankle International, SAGE Publications, Vol. 39, No. 1_suppl ( 2018-07), p. 9S-15S
    Abstract: The evidence supporting best practice guidelines in the field of cartilage repair of the ankle are based on both low quality and low levels of evidence. Therefore, an international consensus group of experts was convened to collaboratively advance toward consensus opinions based on the best available evidence on key topics within cartilage repair of the ankle. The purpose of this article is to report the consensus statements on “Conservative Management and Biological Treatment Strategies” developed at the 2017 International Consensus Meeting on Cartilage Repair of the Ankle. Methods: Seventy-five international experts in cartilage repair of the ankle representing 25 countries and 1 territory were convened and participated in a process based on the Delphi method of achieving consensus. Questions and statements were drafted within 11 working groups focusing on specific topics within cartilage repair of the ankle, after which a comprehensive literature review was performed and the available evidence for each statement was graded. Discussion and debate occurred in cases where statements were not agreed upon in unanimous fashion within the working groups. A final vote was then held, and the strength of consensus was characterized as follows: consensus, 51% to 74%; strong consensus, 75% to 99%; unanimous, 100%. Results: A total of 12 statements on Conservative Management and Biological Treatment Strategies reached consensus during the 2017 International Consensus Meeting on Cartilage Repair of the Ankle. Ten statements reached strong consensus (greater than 75% agreement), and 2 achieved consensus. Conclusions: This international consensus derived from leaders in the field will assist clinicians with conservative management and biological treatment strategies for osteochondral lesions of the talus.
    Type of Medium: Online Resource
    ISSN: 1071-1007 , 1944-7876
    URL: Article
    DOI: 10.1177/1071100718779390
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2129503-7
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  • 8
    Online Resource
    Online Resource
    Osteochondral Autograft: Proceedings of the International Consensus Meeting on Cartilage Repair of the Ankle
    SAGE Publications ; 2018
    In:  Foot & Ankle International Vol. 39, No. 1_suppl ( 2018-07), p. 28S-34S
    Details
    In: Foot & Ankle International, SAGE Publications, Vol. 39, No. 1_suppl ( 2018-07), p. 28S-34S
    Abstract: Treatment guidelines for cartilage lesions of the talus have been based on both low quality and low levels of evidence. Therefore, an international consensus group of experts was convened to collaboratively advance toward consensus opinions on key topics regarding cartilage lesions of the talus. The purpose of this consensus article is to explain the process and delineate the consensus statements derived from this consensus meeting on the use of “osteochondral autograft” for osteochondral lesions of the talus. Methods: Seventy-five international experts in cartilage repair of the ankle representing 25 countries and 1 territory were convened and participated in a process based on the Delphi method of achieving consensus. Questions and statements were drafted within 11 working groups focusing on specific topics within cartilage repair of the ankle, after which a comprehensive literature review was performed and the available evidence for each statement was graded. Discussion and debate occurred in cases where statements were not agreed upon in unanimous fashion within the working groups. A final vote was then held, and the strength of consensus was characterized as follows: consensus, 51% to 74%; strong consensus, 75% to 99%; and unanimous, 100%. Results: A total of 14 statements on osteochondral autograft reached consensus during the 2017 International Consensus Meeting on Cartilage Repair of the Ankle. Two achieved unanimous support, 11 reached strong consensus (greater than 75% agreement), and 1 achieved consensus. All statements reached at least 67% agreement. Conclusions: This international consensus derived from leaders in the field will assist clinicians with osteochondral autograft as a treatment strategy for osteochondral lesions of the talus.
    Type of Medium: Online Resource
    ISSN: 1071-1007 , 1944-7876
    URL: Article
    DOI: 10.1177/1071100718781098
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2129503-7
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  • 9
    Online Resource
    Online Resource
    Scaffold-Based Therapies: Proceedings of the International Consensus Meeting on Cartilage Repair of the Ankle
    SAGE Publications ; 2018
    In:  Foot & Ankle International Vol. 39, No. 1_suppl ( 2018-07), p. 41S-47S
    Details
    In: Foot & Ankle International, SAGE Publications, Vol. 39, No. 1_suppl ( 2018-07), p. 41S-47S
    Abstract: The evidence supporting best practice guidelines in the field of cartilage repair of the ankle are based on both low quality and low levels of evidence. Therefore, an international consensus group of experts was convened to collaboratively advance toward consensus opinions based on the best available evidence on key topics within cartilage repair of the ankle. The purpose of this article is to report the consensus statements on “Scaffold-Based Therapies” developed at the 2017 International Consensus Meeting on Cartilage Repair of the Ankle. Methods: Seventy-five international experts in cartilage repair of the ankle representing 25 countries and 1 territory were convened and participated in a process based on the Delphi method of achieving consensus. Questions and statements were drafted within 11 working groups focusing on specific topics within cartilage repair of the ankle, after which a comprehensive literature review was performed and the available evidence for each statement was graded. Discussion and debate occurred in cases where statements were not agreed upon in unanimous fashion within the working groups. A final vote was then held, and the strength of consensus was characterized as follows: consensus, 51% to 74%; strong consensus, 75% to 99%; unanimous, 100%. Results: A total of 9 statements on scaffold-based therapies reached consensus during the 2017 International Consensus Meeting on Cartilage Repair of the Ankle. One achieved unanimous support, 8 reached strong consensus (greater than 75% agreement), and 1 was removed because of redundancy in the information provided. All statements reached at least 80% agreement. Conclusions: This international consensus derived from leaders in the field will assist clinicians with applying scaffold-based therapies as a treatment strategy for osteochondral lesions of the talus. Level of Evidence: Level V, expert opinion.
    Type of Medium: Online Resource
    ISSN: 1071-1007 , 1944-7876
    URL: Article
    DOI: 10.1177/1071100718781864
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2129503-7
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  • 10
    Online Resource
    Online Resource
    Debridement, Curettage, and Bone Marrow Stimulation: Proceedings of the International Consensus Meeting on Cartilage Repair of the Ankle
    SAGE Publications ; 2018
    In:  Foot & Ankle International Vol. 39, No. 1_suppl ( 2018-07), p. 16S-22S
    Details
    In: Foot & Ankle International, SAGE Publications, Vol. 39, No. 1_suppl ( 2018-07), p. 16S-22S
    Abstract: The evidence supporting best practice guidelines in the field of cartilage repair of the ankle are based on both low quality and low levels of evidence. Therefore, an international consensus group of experts was convened to collaboratively advance toward consensus opinions based on the best available evidence on key topics within cartilage repair of the ankle. The purpose of this article is to report the consensus statements on “Debridement, Curettage and Bone Marrow Stimulation” developed at the 2017 International Consensus Meeting on Cartilage Repair of the Ankle. Methods: Seventy-five international experts in cartilage repair of the ankle representing 25 countries and 1 territory were convened and participated in a process based on the Delphi method of achieving consensus. Questions and statements were drafted within 11 working groups focusing on specific topics within cartilage repair of the ankle, after which a comprehensive literature review was performed and the available evidence for each statement was graded. Discussion and debate occurred in cases where statements were not agreed upon in unanimous fashion within the working groups. A final vote was then held, and the strength of consensus was characterized as follows: consensus, 51% to 74%; strong consensus, 75% to 99%; unanimous, 100%. Results: A total of 14 statements on debridement, curettage, and bone marrow stimulation reached consensus during the 2017 International Consensus Meeting on Cartilage Repair of the Ankle. One achieved unanimous support, 12 reached strong consensus (greater than 75% agreement), and 1 achieved consensus. All statements reached at least 72% agreement. Conclusions: This international consensus derived from leaders in the field will assist clinicians with debridement, curettage and bone marrow stimulation as a treatment strategy for osteochondral lesions of the talus.
    Type of Medium: Online Resource
    ISSN: 1071-1007 , 1944-7876
    URL: Article
    DOI: 10.1177/1071100718779392
    Language: English
    Publisher: SAGE Publications
    Publication Date: 2018
    detail.hit.zdb_id: 2129503-7
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