BMC Rheumatology

Table 3 Spearman's correlations between the Persian 3*I (discounting and lack of understanding) and the SF-12

From: Validity and reliability of the Persian version of illness invalidation inventory (3*I) among patients with non-inflammatory rheumatic painful disorders

	SF-12 subscales
	PF	RP	BP	GH	VT	SF	RE	MH
Spouse
Discounting	−0.39**	−0.25**	−0.30**	−0.23**	−0.23**	−0.22**	−0.37**	−0.40**
Lack of understanding	−0.30**	−0.23**	−0.25**	−0.18*	−0.21**	−0.28**	−0.33**	−0.30**
Family
Discounting	−0.43**	−0.40**	−0.40**	−0.20**	−0.24**	−0.30**	−0.37**	−0.33**
Lack of understanding	−0.24**	−0.30**	−0.19**	−0.18*	−0.12	−0.31**	−0.26**	−0.11
Medical professionals
Discounting	−0.15	−0.20	−0.19	−0.20	0.02	−0.15	−0.12	−0.05
Lack of understanding	−0.05	−0.02	−0.10	−0.18	−0.10	−0.00	−0.07	−0.04
Work environment
Discounting	−0.53*	−0.67**	−0.56*	−0.14	0.00	−0.67**	−0.57*	−0.18
Lack of understanding	−0.62**	−0.72**	−0.42	−0.39	−0.29	−0.46*	−0.53*	−0.56*
Social services
Discounting	−0.30	−0.48*	−0.15	0.25	0.17	−0.52*	−0.34	−0.12
Lack of understanding	−0.46	−0.24	−0.30	−0.06	0.14	−0.29	−0.50*	−0.40

PF physical functioning, RP role physical, BP bodily pain, GH general health, VT vitality, SF social functioning, RE role emotional, MH mental health
A negative correlation indicates that more discounting or lack of understanding is associated with worse mental health, worse physical health or social functioning
*p < 0.05 correlation significant at 0.05 level (two tailed)
**p < 0.01 correlation significant at 0.01 level (two tailed)

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