. 2021 Jul 4;144(3):288–299. doi: 10.1111/acps.13335

TABLE 3.

Reliable improvement, reliable deterioration, remission, relative risks (RRs), and Numbers‐needed‐to‐be‐treated (NNT) of psychotherapies versus control groups

	Psychotherapy					Control groups					Psychotherapy versus control
	N	Rate	95% CI	I ²	95% CI	N	Rate	95% CI	I ²	95% CI	RR	95% CI	I ²	95% CI	NNT	95% CI
Reliable improvement at 2 (±1) months
RCI improvement (CAU)	81	0.59	0.54~0.64	87	85~89	76	0.30	0.26~0.34	82	78~85	1.85	1.62~2.10	83	79~86	3.9	3.0~5.4
RCI improvement (WL)	101	0.60	0.56~0.63	78	73~81	90	0.30	0.27~0.32	54	41~64	1.91	1.75~2.09	72	65~77	3.7	3.1~4.4
RCI improvement (PLA)	5	0.68	0.53~0.80	78	47~91	4	0.57	0.41~0.71	77	37~92	1.14	0.94~1.38	0	0~77	12.5	n.s.
Reliable deterioration at 2 months
RCI deterioration (CAU)	81	0.05	0.04~0.06	13	0~35	76	0.12	0.10~0.14	55	41~65	0.37	0.29~0.48	0	0~9	4.9	3.4~7.7
RCI deterioration (WL)	101	0.05	0.04~0.05	0	0~7	90	0.13	0.12~0.15	34	14~49	0.27	0.22~0.33	0	0~0	2.8	2.2~3.8
RCI deterioration (PLA)	5	0.02	0.01~0.06	0	0~0	5	0.07	0.04~0.11	0	0~0	0.34	0.13~0.88	0	0~36	7.4	2.1~104.8
Remission (HAM‐D <7) at 2 months
Remission (CAU)	22	0.26	0.20~0.33	74	60~83	21	0.12	0.09~0.18	57	30~74	2.19	1.40~3.42	37	0~62	7.0	3.4~20.8
Remission (WL)	27	0.34	0.27~0.41	67	50~78	22	0.09	0.06~0.12	0	0~23	4.39	3.29~5.86	0	0~0	3.3	2.3~4.9
Remission (PLA)	4	0.34	0.27~0.42	0	0~84	3	0.17	0.11~025	0	0~85	2.11	1.90~2.35	0	0~0	5.3	4.4~6.5