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'patients': [42, 84, 111, 152], 'with': [43, 103, 120, 151, 153, 179, 201, 233, 244], 'hospitalised': [45], 'between': [46, 163], '2013': [47], '2020.': [49], 'Empyema': [50, 239], 'classified': [52], 'into': [53, 250, 265], 'culture-positive': [54], '(CPE)': [56], 'or': [57, 65], 'culture-negative': [58], '(CNE)': [60], 'pus-appearing': [62], '(PAE)': [64], 'non-pus-appearing': [66], '(non-PAE)': [68], 'appearance,': [79], 'respectively.': [80], 'Results': [81], 'Altogether,': [82], '212': [83], 'had': [85, 114, 122, 181], 'confirmed': [86], '(CPE:': [88], 'n=188,': [89], 'CNE:': [90], 'n=24;': [91], 'PAE:': [92], 'n=118,': [93], 'non-PAE:': [94], 'n=94).': [95], 'cohort': [97], 'predominantly': [99], 'male': [100], '(n=163,': [101], '76.9%)': [102], 'a': [104, 241], 'mean': [105], 'age': [106], '65.0±13.6': [108], 'years.': [109], 'Most': [110], '(n=180,': [112], '84.9%)': [113], 'at': [115, 172], 'least': [116], 'one': [117], 'comorbidity.': [118], 'Patients': [119, 178], 'CPE': 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