Main trial results

Daniel Hind; Gail Mountain; Rebecca Gossage-Worrall; Stephen J Walters; Rosie Duncan; Louise Newbould; Saleema Rex; Carys Jones; Ann Bowling; Mima Cattan; Angela Cairns; Cindy Cooper; Elizabeth Goyder; Rhiannon Tudor Edwards

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Hind D, Mountain G, Gossage-Worrall R, et al. Putting Life in Years (PLINY): a randomised controlled trial and mixed-methods process evaluation of a telephone friendship intervention to improve mental well-being in independently living older people. Southampton (UK): NIHR Journals Library; 2014 Dec. (Public Health Research, No. 2.7.)

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Putting Life in Years (PLINY): a randomised controlled trial and mixed-methods process evaluation of a telephone friendship intervention to improve mental well-being in independently living older people.

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Appendix 9Main trial results

TABLE 34

Differences in quality-of-life measures at 6 months (per-protocol analysis)

Outcome	Intervention		Control		Unadjusted^a		Adjusted^b
Outcome	n	Mean (SE)	n	Mean (SE)	Mean difference (95% CI)	p-value	Mean difference (95% CI)	p-value
SF-36
Mental health	9	73.9 (5.8)	30	70.7 (3.9)	3.2 (–5.2 to 11.6)	0.452	8.0 (3.3 to 12.7)	< 0.001
Physical functioning	9	51.5 (11.4)	30	56.0 (5.5)	–4.5 (–18.0 to 9.1)	0.519	1.3 (–23.0 to 25.7)	0.914
Role – physical	9	57.6 (8.3)	30	55.4 (5.0)	2.2 (–7.7 to 12.2)	0.662	11.3 (–2.3 to 24.9)	0.104
Bodily pain	9	59.7 (10.7)	30	53.9 (5.4)	5.8 (–14.9 to 26.5)	0.583	12.1 (–2.5 to 26.7)	0.105
General health	9	59.8 (9.4)	30	56.1 (4.2)	3.6 (–11.6 to 18.9)	0.639	0.6 (–8.4 to 9.7)	0.888
Vitality	9	55.6 (6.9)	30	49.6 (4.7)	6.0 (–9.2 to 21.1)	0.440	1.7 (–6.0 to 9.5)	0.661
Social functioning	9	72.2 (9.7)	30	70.0 (5.7)	2.2 (–13.8 to 18.3)	0.786	8.2 (–8.6 to 25.0)	0.336
Role – emotional	9	78.7 (9.2)	30	81.7 (4.4)	–3.0 (–22.9 to 16.9)	0.770	–8.9 (–59.8 to 42.0)	0.731
Physical component summary	9	38.9 (4.8)	30	38.3 (2.1)	0.7 (–7.5 to 8.8)	0.873	1.9 (–2.7 to 6.4)	0.416
Mental component summary	9	51.0 (3.9)	30	49.7 (2.1)	1.3 (–5.4 to 8.0)	0.704	6.7 (4.3 to 9.2)	< 0.001
PHQ-9
Overall score	9	4.4 (1.5)	30	3.6 (0.8)	0.9 (–1.8 to 3.6)	0.526	–1.4 (–2.6 to –0.2)	0.021
EQ-5D
Tariff	9	0.64 (0.14)	29	0.71 (0.05)	–0.08 (–0.24 to 0.09)	0.372	–0.01 (–0.15 to 0.12)	0.880
Thermometer	9	69.4 (8.8)	30	70.5 (4.0)	–1.0 (–13.2 to 11.1)	0.869	–9.0 (–18.3 to 0.2)	0.054
de Jong Gierveld
Emotional loneliness score	9	3.1 (0.7)	30	2.2 (0.3)	0.9 (–0.0 to 1.9)	0.056	0.6 (–0.1 to 1.3)	0.093
Social loneliness score	9	1.6 (0.7)	30	1.2 (0.3)	0.4 (–0.4 to 1.2)	0.354	–0.2 (–0.5 to 0.1)	0.235
Overall loneliness score	9	4.7 (1.2)	30	3.3 (0.5)	1.3 (–0.4 to 3.0)	0.122	–0.3 (–0.8 to 0.2)	0.255
GSE
Total score	9	32.3 (2.2)	30	32.1 (0.7)	0.2 (–3.7 to 4.2)	0.905	1.1 (–0.9 to 3.0)	0.275
ONS well-being
Total score	9	7.2 (0.6)	30	7.6 (0.3)	–0.3 (–1.3 to 0.7)	0.499	0.1 (–0.4 to 0.6)	0.637

: SE, standard error.
a: Unadjusted: fixed covariate is randomised group only.
b: Adjusted: fixed covariates are randomised group, baseline score, age and sex.
: Models are general linear mixed models with befriending group included as a random effect.

Copyright © Queen’s Printer and Controller of HMSO 2014. This work was produced by Hind et al. under the terms of a commissioning contract issued by the Secretary of State for Health. This issue may be freely reproduced for the purposes of private research and study and extracts (or indeed, the full report) may be included in professional journals provided that suitable acknowledgement is made and the reproduction is not associated with any form of advertising. Applications for commercial reproduction should be addressed to: NIHR Journals Library, National Institute for Health Research, Evaluation, Trials and Studies Coordinating Centre, Alpha House, University of Southampton Science Park, Southampton SO16 7NS, UK.

Included under terms of UK Non-commercial Government License.

Bookshelf ID: NBK264009

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Hind D, Mountain G, Gossage-Worrall R, et al. Putting Life in Years (PLINY): a randomised controlled trial and mixed-methods process evaluation of a telephone friendship intervention to improve mental well-being in independently living older people. Southampton (UK): NIHR Journals Library; 2014 Dec. (Public Health Research, No. 2.7.) Appendix 9, Main trial results.
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Appendix 9Main trial results

TABLE 34

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