Table 3

Outcomes for family carers after 12 months: means and differences adjusted for covariates and the other intervention

Measure	Data set	Missing (N=241)	CSP	No CSP	MD	95% CI of MD	Significance level	RYCT	No RYCT	MD	95% CI of MD	Significance level	Significance level of interaction
SF12 MCS*	Original	0	41.56	41.05	0.517	(−1.28 to 2.32)	0.57	41.36	41.25	0.105	(−1.72 to 1.93)	0.91	0.74
SF12 MCS*	Imputed	0	41.56	41.05	0.517	(−1.28 to 2.32)	0.57	41.36	41.25	0.105	(−1.72 to 1.93)	0.91	0.74
SF12 PCS*	Original	0	43.86	43.25	0.613	(−1.23 to 2.46)	0.52	43.34	43.77	−0.428	(−2.29 to 1.43)	0.65	0.98
SF12 PCS*	Imputed	0	43.86	43.25	0.613	(−1.23 to 2.46)	0.52	43.34	43.77	−0.428	(−2.29 to 1.43)	0.65	0.98
EQ-5D utility*	Original	6	0.77	0.72	0.0513	(−0.02 to 0.13)	0.13	0.73	0.76	−0.0250	(−0.10 to 0.05)	0.52	0.79
EQ-5D utility*	Imputed	0	0.77	0.71	0.0574	(−0.02 to 0.13)	0.14	0.72	0.75	−0.0310	(−0.11 to 0.05)	0.43	0.70
EQ-5D self-rated global health*	Original	6	70.72	69.34	1.38	(−3.04 to 5.80)	0.32	70.17	69.90	0.274	(−4.16 to 4.70)	0.87	0.34
EQ-5D self-rated global health*	Imputed	0	69.73	69.35	0.384	(−4.20 to 4.96)	0.87	70.00	69.08	0.915	(−3.65 to 5.48)	0.69	0.27
HADS anxiety	Original	3	6.83	7.22	−0.389	(−1.33 to 0.56)	0.22	7.19	6.85	0.336	(−0.61 to 1.28)	0.51	0.38
	Imputed	0	6.91	7.26	−0.33	(−1.31 to 0.60)	0.47	7.23	6.93	0.298	(−0.65 to 1.25)	0.54	0.29
HADS depression	Original	3	5.93	5.96	−0.0254	(−0.90 to 0.85)	0.84	5.93	5.96	−0.0250	(−0.91 to 0.86)	0.94	0.71
	Imputed	0	5.99	5.97	0.0144	(−0.85 to 0.88)	0.97	5.95	6.02	−0.0700	(−0.95 to 0.81)	0.88	0.65
PANAS positive affectivity*	Original	4	30.59	30.37	0.226	(−1.23 to 1.68)	0.77	31.02	29.94	1.07	(−0.40 to 2.56)	0.15	0.93
PANAS positive affectivity*	Imputed	0	30.47	30.30	0.163	(−1.29 to 1.62)	0.83	30.85	29.92	0.936	(−0.55 to 2.42)	0.22	0.93
COPE PAC*	Original	24	12.14	12.26	−0.116	(−0.64 to 0.41)	0.70	12.26	12.14	0.114	(−0.41 to 0.64)	0.65	0.79
COPE PAC*	Imputed	0	12.13	12.11	0.0125	(−0.54 to 0.56)	0.96	12.16	12.08	0.0784	(−0.45 to 0.61)	0.77	0.93
Carer distress NPI-D	Original	37	11.94	9.51	2.435	(0.14 to 4.73)	0.04	10.58	10.87	−0.294	(−2.58 to 1.99)	0.73	0.10
Carer distress NPI-D	Imputed	0	12.63	10.82	1.819	(−0.46 to 4.10)	0.12	11.68	11.77	−0.0851	(−2.28 to 2.10)	0.94	0.40
Personal growth*	Original	5	12.03	12.43	−0.396	(−0.98 to 0.19)	0.18	12.41	12.05	0.360	(−0.23 to 0.95)	0.26	0.23
Personal growth*	Imputed	0	12.03	12.44	−0.412	(−1.00 to 0.18)	0.17	12.42	12.05	0.369	(−0.22 to 0.96)	0.22	0.23
QCPR warmth*	Original	24	31.36	31.27	0.0936	(−1.11 to 1.30)	0.82	31.72	30.91	0.819	(−0.40 to 2.04)	0.17	0.69
QCPR warmth*	Imputed	0	31.32	31.06	0.260	(−0.99 to 1.50)	0.68	31.63	30.74	0.892	(−0.33 to 2.12)	0.15	0.76
QCPR absence of criticism and conflict*	Original	24	22.23	21.45	0.778	(−0.28 to 1.84)	0.15	22.19	21.49	0.704	(−0.35 to 1.76)	0.19	0.97
QCPR absence of criticism and conflict*	Imputed	0	22.08	20.97	1.107	(0.00 to 2.21)	0.05	22.02	21.04	0.981	(−0.15 to 2.11)	0.09	0.76
QCPR total*	Original	24	53.60	52.70	0.903	(−1.03 to 2.83)	0.33	53.89	52.40	1.493	(−0.44 to 3.42)	0.12	0.81
QCPR total*	Imputed	0	53.41	52.00	1.416	(−0.47 to 3.30)	0.14	53.64	51.77	1.869	(−0.02 to 3.75)	0.05	0.84
Loneliness	Original	4	2.68	2.51	0.168	(−0.32 to 0.66)	0.61	2.47	2.71	−0.244	(−0.73 to 0.24)	0.31	0.52
Loneliness	Imputed	0	2.72	2.53	0.187	(−0.31 to 0.68)	0.46	2.49	2.76	−0.267	(−0.76 to 0.22)	0.29	0.40

Covariates: baseline score, carer gender, kinship and centre (random effect).
*Higher scores are better.
COPE, Carers of Older People in Europe; EQ-5D, EuroQol 5 dimensions; HADS, Hospital Anxiety and Depression Scale; MCS, mental component score; NPI-D, Neuropsychiatric Inventory Distress Scale; PAC, Positive Aspects of Caring; PANAS, Positive and Negative Affect Schedule; PCS, Physical Component Score; QCPR, Quality of Caregiver–Patient Relationship; SF, short form.