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Table 4 Health-related quality of life scores, adjusted mean values (± SD) – BTS criteria

From: Health-related quality of life is related to COPD disease severity

Scale

FEV1 % predicted

 

≥ 80% Stage 0 n = 26

79-60% Stage I n = 63

59-40% Stage II n = 47

< 40%Stage III n = 23

p-value (all stages)

SF-36 PCS

42(12)

43(11)

40(13)

35(11)

0.032

SF-36 MCS

55(8)

50(10)

54(11)

50(15)

0.29

SGRQ Total

25(20)

32(20)

34(19)

45(22)

0.0023

EQ-5D VAS

73(21)

68(20)

60(28)

50(25)

0.0007

EQ-5D index

0.84(0.15)

0.74(0.21)

0.72(0.28)

0.63(0.25)

0.0041