Knowledge gaps in patients with COPD and their proxies

BMC Pulmonary Medicine

Table 4 Mean values of correct, incorrect and ‘do not know’ answers and percentages of pulmonary rehabilitation attendance in patients with COPD GOLD grade II, GOLD grade III and GOLD grade IV

	Patients with COPD GOLD grade II (n = 93)	Patients with COPD GOLD grade III (n = 62)	Patients with COPD GOLD grade IV (n = 39)	p-value
Knowledge statements
• Correct answers, mean (SD)^a	19.4 (5.5)^†	20.4 (5.0)	25.2 (3.3)	0.006
• Incorrect answers, mean (SD)	6.2 (2.5)	6.8 (2.6)	5.8 (2.0)	0.767
• ‘Do not know’, mean (SD)^a	8.4 (6.1)^†	6.3 (4.3)	3.1 (2.8)	0.006
Pulmonary rehabilitation
• Patients who attended PR, n (%)	24 (25.8%)^†,‡	33 (53.2%)	27 (69.2%)	<0.001

Values expressed as mean (SD)
Abbreviations: COPD Chronic Obstructive Pulmonary Disease, PR pulmonary rehabilitation
^aNon-parametric statistic tests were used because of skewed data
^† p < 0.01 vs patients with COPD GOLD grade IV
^‡ p < 0.01 vs patients with COPD GOLD grade III

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