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'score': [192, 207, 225], '(r': [193], '-0.373,': [195], '0.001).': [198], 'Multiple': [199], 'stepwise': [200], 'regresion': [201], 'analysis': [202], 'that': [204], 'an': [209], 'independent': [210], 'psychological': [211], 'predictor': [212, 221], '6MWD,': [214], 'only': [219], 'physical': [220], 'total': [224], 'COPD.There': [229], 'close': [232]}, 'cited_by_api_url': 'https://api.openalex.org/works?filter=cites:W2138610141', 'counts_by_year': [{'year': 2024, 'cited_by_count': 3}, {'year': 2023, 'cited_by_count': 3}, {'year': 2022, 'cited_by_count': 4}, {'year': 2021, 'cited_by_count': 2}, {'year': 2020, 'cited_by_count': 6}, {'year': 2019, 'cited_by_count': 2}, {'year': 2018, 'cited_by_count': 1}, {'year': 2017, 'cited_by_count': 1}, {'year': 2015, 'cited_by_count': 1}], 'updated_date': '2024-09-10T18:14:05.645705', 'created_date': '2016-06-24'}