A randomised comparison of a four- and a five-point scale version of the Norwegian Function Assessment Scale

Table 4 Correlation^a between NFAS, COOP/WONCA, GHQ-20 and Work ability for the NFAS-4 and the NFAS-5 (N = 3325)

NFAS-4	Norwegian Function Assessment Scale							COOP/WONCA			GHQ-20	Work ability
N = 1620	Walk./stand.	Hold./pick.	Lift./carry.	Sitting	Manag.	Coop./Comm.	Senses	Phys. fitness	Feelings	Overall health
Walking/standing								0.46	0.30	0.58	0.36	0.50
Holding/picking up things	0.67							0.38	0.32	0.53	0.37	0.52
Lifting/carrying	0.65	0.69						0.40	0.33	0.54	0.39	0.50
Sitting	0.51	0.53	0.51					0.26	0.26	0.40	0.29	0.37
Managing	0.46	0.49	0.49	0.38				0.26	0.61	0.58	0.62	0.42
Cooperation/communication	0.37	0.40	0.39	0.26	0.66			0.26	0.42	0.45	0.46	0.34
Senses	0.25	0.26	0.27	0.22	0.24	0.33		0.11	0.16	0.20	0.18	0.20
Total scores	0.77	0.75	0.76	0.52	0.79	0.69	0.29	0.46	0.50	0.69	0.56	0.56
NFAS-5	Norwegian Function Assessment Scale							COOP/WONCA			GHQ-20	Work ability
N = 1705	Walk./stand.	Hold./pick.	Lift./carry.	Sitting	Manag.	Coop./comm.	Senses	Phys. fitness	Feelings	Overall health
Walking/standing								0.51	0.25	0.57	0.36	0.51
Holding/picking up things	0.73							0.41	0.27	0.54	0.37	0.56
Lifting/carrying	0.73	0.74						0.44	0.28	0.55	0.40	0.58
Sitting	0.59	0.60	0.63					0.34	0.24	0.43	0.32	0.41
Managing	0.51	0.54	0.54	0.48				0.29	0.56	0.59	0.61	0.46
Cooperation/communication	0.43	0.47	0.44	0.40	0.72			0.28	0.42	0.48	0.47	0.38
Senses	0.30	0.34	0.32	0.33	0.36	0.42		0.19	0.18	0.27	0.25	0.26
Total scores	0.76	0.76	0.76	0.60	0.83	0.76	0.38	0.45	0.46	0.67	0.55	0.57

^aSpearman's correlation
For all correlation coefficients: p < 0.001.
Bold numbers indicate apriori hypothesized associations with high correlation coefficients.

ISSN: 1477-7525