. 2018 Sep 12;13(9):e0201593. doi: 10.1371/journal.pone.0201593

Table 3. Functional and health status characteristics of the seven lung function clusters.

	Cluster 1N = 75	Cluster 2N = 61	Cluster 3N = 89	Cluster 4N = 79	Cluster 5N = 66	Cluster 6N = 61	Cluster 7N = 87
6MWD, m	466 (118)^† ^§ ^¶ ^ị	430 (131)^‡ ^¡ ^ị	445 (115)^¡ ^¶ ^ị	495 (94)^§ ^¶ ^ị	413 (100)^ị	400 (112)^ị	340 (131)
6MWD, % predicted	76 (16)^† ^‡ ^§ ^¶ ^ị	64 (18)^‡ ^¡ ^ị	70 (16)^¡ ^§ ^¶ ^ị	80 (12)^§ ^¶ ^ị	64 (13)^ị	63 (16)^ị	53 (19)
Peak Vo2, % predicted	81 (36)^† ^‡ ^§ ^¶ ^ị	55 (16)^‡ ^¡	68 (30)^¡ ^§ ^ị	82 (29)^§ ^¶ ^ị	55 (21)	58 (22)^ị	47 (26)
Peak work rate, % predicted	75 (32)^† ^‡ ^§ ^¶ ^ị	48 (19)^‡ ^¡ ^ị	60 (26)^¡ ^§ ^¶ ^ị	73 (26)^§ ^¶ ^ị	43 (16)^ị	47 (18)^ị	36 (21)
CWRT, s	356 (225)^‡ ^¶ ^ị	307 (297)	266 (173)^¡	353 (221)^¶ ^ị	293 (216)	247 (136)	242 (222)
Quadriceps peak torque, % predicted	79 (15)^† ^‡ ^§ ^¶ ^ị	63 (20)^‡ ^¡ ^ị	69 (17)^¡ ^¶ ^ị	76 (19)^§ ^¶ ^ị	64 (16)^ị	62 (17)^ị	51 (14)
BMI, kg/m2	31 (6)^† ^‡ ^¡ ^§ ^¶ ^ị	27 (5)^‡ ^¶ ^ị	25 (5)^¡ ^ị	28 (6)^§ ^¶ ^ị	26 (5)^ị	24 (5)^ị	22 (5)
FFMI, kg/m2	19 (3)^† ^‡ ^¡ ^§ ^¶ ^ị	18 (2)^‡ ^¶ ^ị	17 (2)^¡ ^§ ^¶ ^ị	18 (3)^¶ ^ị	18 (3)^¶ ^ị	16 (2)	16 (2)
mMRC dyspnea grade	2.0 (1.0)^† ^§ ^¶ ^ị	2.6 (1.1)^‡ ^¡ ^ị	2.1 (1.0)^§ ^¶ ^ị	2.0 (1.0)^§ ^¶ ^ị	2.7 (0.9)	2.8 (0.9)	2.9 (1.0)
SGRQ, points	57 (21)^§ ^¶ ^ị	61 (18)^¡ ^§ ^¶ ^ị	58 (17)^§ ^¶ ^ị	53 (15)^§ ^¶ ^ị	67 (15)	67 (15)	67 (16)
CAT, points	20 (7)^§ ^¶ ^ị	20 (7)^§ ^¶ ^ị	21 (6)^¶	21 (7)^§ ^¶	23 (6)	24 (6)	23 (6)
CCQ, points	2.3 (1.1)^§ ^¶ ^ị	2.6 (1.2)^ị	2.5 (0.9)^§ ^¶ ^ị	2.3 (0.9)^§ ^¶ ^ị	2.8 (0.9)	3.0 (1.0)	3.0 (0.9)

See Table 1 legend for expansion of abbreviations.

Purple: A significantly higher value compared to the value of the remaining six clusters together (P<0.05)

Green: A significantly lower value compared to the value of the remaining six clusters together (P<0.05)

†: p<0.01 versus cluster 2;

‡: p<0.01 versus cluster 3;

¡: p<0.01 versus cluster 4;

§: p<0.01 versus cluster 5;

¶: p<0.01 versus cluster 6;

ị: p<0.01 versus cluster 7.