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Table 2 Comparison between baseline and first 7 days of exacerbation (mean ± SD)

From: Daily activity during stability and exacerbation of chronic obstructive pulmonary disease

  Stable Exacerbation Difference p-value
Daily step-counts (step/day) 4154 (±2586) 3673 (±2258) −480 (±1408) 0.045
Symptom count 0.4 (±0.7) 2.4 (±1.0) 1.9 (±1.3) <0.001
Peak Expiratory Flow (L/Min) 273 (±109) 266 (±108) −7 (±13) 0.005
Time outdoors (hours/day) 3.4 (±1.8) 3.2 (±1.8) −0.1 (±1.1) 0.51
Percentage of days on which patient went outdoors (%) 84.4 (24.2) 79.6 (26.1) −4.8 (±18) 0.13