. Author manuscript; available in PMC: 2012 May 1.

Published in final edited form as: Cancer Nurs. 2011 MAY-JUN;34(3):219–227. doi: 10.1097/NCC.0b013e3181f9904d

Table 2.

Correlations of Study Variables (Pearson r for all variables except Spearman Rho r₂ or pain rating and ISS Stage of Disease)

	Age	Hemoglobin	Fatigue	Pain	Mood Disturbance	Pounds Lifted	Distance walked	Night Time Sleep	Sleep Efficiency	ISS Stage of Disease

Age r	1	−.112	−.088	.021	.013	−.078	−.159^a	−.154^a	−.255^b	.251 ^b
Sig. (2-tailed)		.125	.230	.772	.862	.470	.030	.040	.001	.001
N	187	187	187	187	187	88	186	178	178	187

Hemoglobin r	−.112	1	.193^b	.069	−.120	.023	.096	−.032	−.014	−.462^b
Sig. (2-tailed)	.125		.008	.349	.103	.835	.194	.668	.856	.000
N	187	187	187	187	187	88	186	178	178	187

Fatigue (FACT) r	−.088	.193^b	1	−.320^b	−.703^b	.355^b	.411^b	−.025	.148^a	−.219^b
Sig. (2-tailed)	.230	.008		.000	.000	.001	.000	.742	.048	.003
N	187	187	187	187	187	88	186	178	178	187

Pain r₂	.006	.035	−.326^b	1.000	.273^b	−.329^b	−.385^b	−.091	−.174^a	−.029
Sig. (2-tailed)	.936	.630	.000	.	.000	.002	.000	.229	.020	.691
N	187	187	187	187	187	88	186	178	178	187

Mood Disturbance r	.013	−.120	−.703^b	.250^b	1	−.319^b	−.238^b	−.034	−.071	.166^a
Sig. (2-tailed)	.862	.103	.000	.001		.002	.001	.651	.344	.023
N	187	187	187	187	187	88	186	178	178	187

Pounds Lifted r	−.078	.023	.355^b	−.372^b	−.319^b	1	.565^b	−.021	−.027	−.025
Sig. (2-tailed)	.470	.835	.001	.000	.002		.000	.847	.806	.820
N	88	88	88	88	88	88	88	86	86	88

Distance Walked	−.159 ^a	.096	.411^b	−.363^b	−.238^b	.565^b	1	.081	.239^b	−.144
Sig. (2-tailed)	.030	.194	.000	.000	.001	.000		.282	.001	.051
N	186	186	186	186	186	88	186	178	178	186

Nighttime Sleep r	−.154^a	−.032	−.025	−.075	−.034	−.021	.081	1	.740^b	−.189^a

Sig. (2-tailed)	.040	.668	.742	.322	.651	.847	.282		.000	.012
N	178	178	178	178	178	86	178	178	178	178

Sleep Efficiency^c	−.255^b	−.014	.148^a	−.123	−.071	−.027	.239^b	.740^b	1	−.200^b
Sig. (2-tailed)	.001	.856	.048	.101	.344	.806	.001	.000		.007
N	178	178	178	178	178	86	178	178	178	178

ISS Stage of Disease r₂	.256^b	−.441^b	−.226^b	−.029	.153^a	−.033	−.162^a	−.185^a	−.223^b	1.000
Sig. (2-tailed)	.000	.000	.002	.691	.036	.760	.027	.014	.003	.
N	187	187	187	187	187	88	186	178	178	187

Correlation is significant at the 0.05 level (2-tailed).

Correlation is significant at the 0.01 level (2-tailed).

Sleep efficiency=Percent of time asleep while in bed at night.