Table 2

Correlation matrix for symptoms at baseline and fatigue baseline and 5-month follow-up (n=196)

	1	2	3	4	5	6	7	8	9	10	11	12	13
1 Age	1
2 Sex	−0.16*	1
3 FEV₁	0.06	0.09	1
4 FVC	0.02	0.31*	0.65*	1
5 Fatigue (LFS) baseline	−0.23*	−0.01	−0.19*	−0.14	1
6 Fatigue (LFS) 5 month follow-up	−0.16*	−0.02	−0.22*	−0.17*	0.52*	1
7 Comorbidities (SCQ)	0.04	0.13	−0.23*	−0.12	0.29*	0.31*	1
8 Shortness of breath (EORTC)	−0.03	−0.16*	−0.25*	−0.24*	0.35*	0.62*	0.31*	1
9 Cough (EORTC)	−0.04	0.01	−0.14	−0.15*	0.33*	0.33*	−0.04	0.17*	1
10 Depression (CES-D)	−0.15*	0.14	−0.07	–0.03	0.47*	0.31*	0.17*	0.17*	0.12	1
11 Anxiety (STAI)	0.06	−0.07	0.08	−0.00	−0.24*	−0.12	−0.08	−0.01	−0.1	−0.28*	1
12 Sleep disturbance (GSDS)	−0.22*	0.03	−0.09	−0.08	0.50*	0.41*	0.18*	0.26*	0.14	0.57*	−0.22*	1
13 Pain (BPI)	0.1	−0.11	0.09	0.1	−0.25*	−0.23*	−0.18*	−0.15	−0.02	−0.08	0.18*	−0.23*	1

*Correlation is significant at the 0.05 level (two tailed).
BPI, Brief Pain Inventory; CES-D, Center for Epidemiologic Studies – Depression Scale; EORTC, European Organization for Research and Treatment of Cancer; FEV₁, forced expiratory volume in 1 s; FVC, forced vital capacity; GSDS, General Sleep Disturbance Scale; LFS, Lee Fatigue Inventory; SCQ, Self-administered Comorbidity Questionnaire; STAI, State-Trait Anxiety Inventory.