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Table 1 Participant baseline characteristics (n = 5709 cases)

From: Impact of COPD and anemia on motor and cognitive performance in the general older population: results from the English longitudinal study of ageing

COPD StatusHealthy, n = 4929Mild n = 246Moderate n = 370Severe n = 124Very severe n = 40
Age (years) median [IQR]61 [56–69]67 [60–75]67 [61–73]68 [63–73]64 [59–69]
Male sex % (n)45% (2224)52% (129)47% (175)46% (57)60% (24)
HB (g/dl) median [IQR]14.20 [13.40–15.10]14.20 [13.30–15.10]14.20 [13.40–15.03]14.20 [13.40–15.20]14.55 [13.73–15.40]
Diabetes (as % glycated HB > 6.5) in % (n)5% (224)7% (16)7% (26)11%(14)3% (1)
Total cholesterol (mmol/l) median [IQR]5.80 [5.10–6.60]5.50[4.80–6.40]5.50 [4.70–6.30]5.70 [4.80–6.68]5.75 [5.00–6.58]
Depression (CES-D scale> = 4) in % (n)9% (457)17% (43)20% (73)21% (26)23% (9)
Grip (kg) median [IQR])29.67 [23.33–40.33]28.17 [20.67–38.91]27.67 [21.67–36.00]26.67 [21.67–32.67]28.00 [22.75–38.17]
Self-reported prior stroke (yes/no) in % (n)2% (75)6% (14)4% (14)4% (5)5% (2)
Self-reported prior MI (yes/no) in% (n)2% (103)5% (11)6% (24)4% (5)10% (4)
Self-reported current Smoking in % (n)7% (405)15% (37)30% (109)36% (44)33% (13)
Self-reported Alcohol (frequency of days drinking/week) median [IQR]3 [2–4] *3 [1–4] *3 [1–4] *3 [1–4] *3[1–4] *
HypertensionA in % (n)23%*29% *34%*36% *25% *
Number Words memorized (n) median [IQR]5.0 [4.0–6.0]4.50 [3.0–6.0]5.0 [3.0–6.0]5.0 [3.0–6.0]5.0 [4.0–6.0]
Time needed to complete five chair rises (seconds) median [IQR]10.12 [8.26–12.31]11.60 [9.06–13.86]11.62 [9.28–14.57]13.18 [10.62–15.75]12.08 [10.15–15.60]
  1. Values represent measured data at baseline without any centering or standardization performed
  2. Abbreviations: MI myocardial infarction, IQR interquartile range, HB hemoglobin, COPD chronic obstructive pulmonary disease
  3. * > 5% of data points missing in the following variables: alcohol in healthy (n = 3312), mild COPD (n = 136), moderate (n = 208), severe (n = 73), very severe (n = 23) and for hypertension in healthy (1075/4629, 23%) mild COPD (66/224, 29%), moderate COPD(116/337,34%),severe COPD (38/107, 36%) and very severe COPD(9/36,25%)
  4. Amean systolic at least > 140 or diastolic > 90 or intake of antihypertensive medication in % (n)