‘Putting Life in Years’ (PLINY) telephone friendship groups research study: pilot randomised controlled trial

Table 3 Mean 6 month post-randomisation follow-up participant reported outcomes by randomised group (N = 56)

	Group
	Intervention			Control
Six-month outcome	N	Mean	SD	N	Mean	SD	Difference*	Lower	Upper	Adjusted difference**	Lower	Upper
SF-36 Mental health	26	77.5	18.4	30	70.7	21.2	6.5	-3	16	9.5	4.5	14.5
SF-36 Physical function	26	60.3	29.9	30	56	29.9	3.4	-10.8	17.5	5	-0.9	10.9
SF-36 Role physical	26	72.6	24.7	30	55.4	27.6	15.6	3.8	27.4	20.2	9.9	30.6
SF-36 Bodily pain	26	71	26	30	53.9	29.8	17.1	2.5,	31.7	16.6	8	25.3
SF-36 General health	26	66.2	24.2	30	56.1	22.9	10.3	-1.2	21.9	2.5	-6.4	11.4
SF-36 Vitality	26	59.4	19.8	30	49.6	25.5	9.8	-2	21.7	3.1	-2.8	9
SF-36 Social function	26	84.1	22.8	30	70	31.1	13.4	1.4	25.4	18.1	7.9	28.3
SF-36 Role emotional	26	89.1	19.4	30	81.7	23.9	7.4	-3.1	17.9	8.6	-0.8	18
SF-36 Physical component summary	26	43.5	10.9	30	38.3	11.5	5.1	-0.4	10.7	4.5	1.4	7.5
SF-36 Mental component summary	26	53.9	9.8	30	49.7	11.5	4.1	-0.5	8.7	4.7	2	7.5
EQ-5D	26	0.73	0.35	29	0.71	0.27	-0.04	-0.17	0.1	0.02	-0.05	0.09
EQ-5D VAS	26	75.5	19.5	30	70.5	21.8	4.7	-4.6	14	5.1	-4.9	15.2
De Jong emotional loneliness	26	2.2	2	30	2.2	1.9	0.2	-0.5	0.9	0	-0.6	0.6
De Jong social loneliness	25	1.3	1.9	30	1.2	1.5	-0.1	-0.7	0.5	0.3	-0.2	0.8
De Jong overall loneliness	26	3.5	3.4	30	3.3	2.9	0	-1	1	0.6	-0.4	1.6
PHQ-9 (6 months)	26	3.1	4	30	3.6	4.6	-0.4	-2.2	1.3	-1.3	-2.6	0
ONS wellbeing	26	8	1.5	30	7.6	1.8	0.5	-0.2	1.2	0.8	0.2	1.4
GSE	26	32.9	4.7	30	32.1	3.8	0.8	-1.5	3.2	1.2	-0.7	3.1

The Short Form (36) Health Instrument (SF-36) Dimensions are scored on a 0 (poor) to 100 (good) health scale. The EuroQol 5-Dimension (EQ-5D) utility score is measured on a -0.56 to 1.00 (good health) scale, except for the Physical and Mental Component summary scores which are standardised to have a mean of 50 and a SD of 10. The EQ-5D visual analogue scale (VAS) is measured on a 0 (worst imaginable health state) to 100 (best imaginable health state). The emotional loneliness scale of the De Jong is scored on a 0 to 6 scale with higher scores indicating more loneliness. The social loneliness scale of the De Jong is scored on a 0 to 5 scale with higher scores indicating more loneliness. The total loneliness scale of the De Jong is scored on a 0 to 11 scale with higher scores indicating more loneliness. The Patient Health Questionnaire (PHQ)-9 is measured on a 0 to 27 scale with higher scores indicating more severe depressive symptoms. General Self-Efficacy (GSE) Scale is scored on a 10 to 40 scale with higher scores indicating more perceived self-efficacy. The Office for National Statistics (ONS) instrument measures subjective well-being on a 0 to 40 scale, with higher scores indicating high subjective well-being.
Models are general linear mixed model with befriending group included as a random effect. *Unadjusted: fixed covariate is randomised group only. **Adjusted: fixed covariates are randomised group, baseline score, age and gender.

ISSN: 1745-6215