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Table 2 Population characteristics

From: Determinants of frailty in primary care patients with COPD: the Greek UNLOCK study

 

TOTAL

NON-FRAIL

FRAIL-DISABLE

P-VALUEa

N = 257

N = 45 (18%)

N = 208 (82%)b

Age; mean (SD)

65 (12.3)

57.3 (11.3)

64.7 (11.6)

<0.001

BMI; mean (SD)

29 (5.3)

29 (4.7)

29 (5.3)

0.849

Males; n (%)

204 (79.4)

36 (80.0)

162 (79.0)

0.884

Marital status; n (%)

   

0.005

Married/with partner

208 (84.2)

35 (81.4)

171 (85.1)

Widower

24 (9.7)

1 (2.3)

22 (10.9)

Divorced or never married

15 (6.1)

7 (16.3)

8 (4.0)

Occupational status; n (%)

   

0.088

Employed

74 (33.3)

17 (45.9)

53 (29.4)

Unemployed/housewife

25 (11.3)

5 (13.5)

20 (11.1)

Retired

123 (55.4)

15 (40.5)

107 (59.4)

Smoking status; n (%)

   

0.091

Current

143 (55.6)

31 (68.9)

106 (51.7)

Ex

83 (32.3)

9 (20.0)

73 (35.6)

Never

31 (12.1)

5 (11.1)

26 (12.7)

Pack-years; median (min-max)

40 (10–200)

40 (20–100)

40 (10–200)

0.197

Main symptom; n (%)

   

0.458

Cough

96 (37.9)

15 (34.1)

76 (37.4)

Dyspnea

135 (53.4)

23 (17.2)

111 (54.7)

Else (Wheezing, chest tightness, phlegm)

22 (8.7)

6 (13.6)

16 (7.9)

CAT symptom severity; n (%)

   

0.002

< 10

22 (8.9)

10 (23.3)

12 (6.1)

≥10

224 (91.1)

33 (77.7)

184 (93.9)

mMRC symptom severity; n (%)

   

< 0.001

0–1

100 (39.4)

33 (73.3)

66 (32.4)

≥2

154 (60.6)

12 (26.7)

138 (67.6)

Number of exacerbations in the last 12 months; median (mix-max)

1 (0–4)

1 (0–2)

1 (0–4)

0.033

Number of hospitalisation in the last 12 months; median (min-max)

0 (0–3)

0

0 (0–3)

0.100

GOLD 2017 – CAT; n (%)

   

0.003

A

11 (5.4)

5 (14.3)

6 (3.6)

B

115 (56.4)

21 (60.0)

90 (54.5)

C

3 (1.5)

2 (5.7)

1 (0.6)

D

75 (36.8)

7 (20.0)

68 (41.2)

GOLD 2017 – mMRC; n (%)

   

<0.001

A

57 (27.5)

18 (50.0)

39 (23.1)

B

71 (34.3)

9 (25.0)

60 (35.5)

C

20 (9.7)

7 (19.4)

13 (7.7)

D

59 (28.5)

2 (5.6)

57 (33.7)

Type II Diabetes Mellitus; n (%)

28 (11.0)

3 (6.7)

25 (12.3)

0.279

Hypertension; n (%)

186 (72.9)

26 (59.1)

156 (76.5)

0.018

Hyperlipidaemia; n (%)

63 (24.6)

10 (22.2)

51 (25.0)

0.695

Coronary Heart Disease; n (%)

32 (12.5)

2 (4.4)

30 (14.7)

0.063

Thyroid disorder; n (%)

19 (7.4)

4 (8.9)

15 (7.4)

0.757

Osteoporosis; n (%)

7 (2.7)

1 (2.2)

5 (2.5)

0.999

Depression; n (%)

23 (9)

2 (4.4)

21 (10.3)

0.391

Gastro-oesophageal reflux; n (%)

30 (11.7)

9 (20.0)

21 (10.3)

0.07

Cancer (any); n (%)

3 (1.2)

1 (2.2)

2 (1.0)

0.452

≥2 comorbidities; n (%)

108 (42.5)

12 (27.3)

95 (46.8)

0.028

  1. aP-value is given by Chi-square test or Fisher exact test for categorical variables and by T-test for normally distributed variables (age, BMI) or Mann Witney test for not normally distributed variables
  2. bpooled group of 208 (82.2%) patients including: 15 (6%) frail subjects without disability, 162 (64%) frail with mobility disability and 31 (12.2%) subjects with mobility disability only. Disabled group as defined by FiND (A + B ≥ 1) consisted of the latter two groups (n = 193 (76.2%))
  3. Bold faceted P-values show significant associations (P-value< 0.05). GOLD 2017: Global Initiative for Obstructive Lung Disease 2017 Guidelines, CAT: Chronic Obstructive Pulmonary Disease Assessment Test, mMRC: Modified Medical Research Council Dyspnoea Scale, BMI: body mass index