Table 1.

Results of the moderation analysis investigating alexithymia as a moderator of the association between the patients’ alliance ratings and the outcome.

Outcome: PCS at follow-up
Model summary
R	R2	MSE	F	df1	df2	p-Value
0.57	0.32	66.40	9.27	4.00	78.00	<0.01
	Model
	Coefficient	SE	t	p-Value	LLCI	ULCI
Constant	32.16	18.35	1.75	0.08	−4.38	68.69
TAS-20	−0.35	0.39	−0.90	0.37	−1.12	0.42
HAQ_P	−3.60	3.90	−0.92	0.36	−11.36	4.17
HAQ_P*TAS-20	0.05	0.08	0.58	0.57	−0.12	0.21
PCS at pre-treatment	0.88	0.15	6.01	<0.01	0.59	1.17
Conditional effect of HAQ_P on PCS at follow-up at values of TAS-20
TAS-20 values	Effect	SE	t	p-Value	LLCI	ULCI
10th percentile: 31	−2.11	1.55	−1.36	0.18	−5.19	0.98
25th percentile: 40	−1.67	1.08	−1.55	0.13	−3.83	0.48
50th percentile: 49	−1.24	1.03	−1.20	0.23	−3.30	0.82
75th percentile: 56	−0.91	1.33	−0.68	0.50	−3.55	1.74
90th percentile: 62	−0.62	1.70	−0.36	0.72	−4.01	2.77

PCS, Physical Component Summary of the SF-36 Health Survey; TAS-20, Toronto Alexithymia Scale; HAQ_P, Helping Alliance Questionnaire patient version; LLCI, lower level of the confidence interval; ULCI, upper level of the confidence interval.