Table 4.

Treatment outcomes

		Estimated mean*			Cohen's d effect size from assessment		Percentage change in estimated mean*from assessment		Reliable treatment outcome†
		Assessment	Post-treatment	3 month follow-up	To post-treatment	To 3 month follow-up	To post-treatment	To 3 month follow-up	Deterioration	Recovery
Depression (Patient Health Questionnaire-9; n=21 745)		13·6 (5·9)	6·5 (4·2)	6·5 (4·4)	1·40 (1·37–1·43)	1·36 (1·34–1·38)	52·2% (51·6–52·8)	52·2% (51·5–52·9)	184/13 058 (1·4%)	5419/9105 (59·5%)
Anxiety (Generalized Anxiety Disorder 7-Item Scale; n=21 745)		12·0 (5·0)	5·7 (3·6)	5·7 (3·8)	1·45 (1·42–1·47)	1·42 (1·40–1·44)	52·5% (52·1–52·9)	52·5% (52·1–52·9)	282/13 058 (2·2%)	5862/9810 (59·8%)
Distress (Kessler Psychological Distress 10-Item Scale; n=21 745)		30·1 (6·9)	20·8 (6·2)	20·5 (6·4)	1·42 (1·40–1·44)	1·44 (1·42–1·46)	46·3% (45·9–46·7)‡	47·8% (47·3–48·2)‡	..	..
Functional effect (Kessler Psychological Distress 10-Item Plus Scale; n=5120)
	Whole days out of role	5·4 (7·5)	3·5 (6·2)	3·3 (6·4)	0·28 (0·25–0·31)	0·30 (0·28–0·32)	35·2% (33·7–36·7)	38·9% (37·2–40·6)	..	..
	Part days out of role	9·3 (8·4)	6·0 (7·2)	5·8 (7·4)	0·42 (0·39–0·45)	0·44 (0·42–0·46)	35·5% (34·4–36·6)	37·6% (36·6–38·7)	..	..

Data are mean (SD), % change (95% CI), effect size (95% CI), or n/N (%); for reliable recovery, numerators are number of patients meeting thresholds for reliable recovery and denominators are number of patients with clinically significant symptoms at assessment and complete post-treatment questionnaires, and for reliable deterioration, numerators are number of patients meeting threshold for reliable deterioration and denominators are number of patients who completed the post-treatment questionnaires.

^*Estimated marginal means derived from generalised estimating equation modelling.

^†Reliable deterioration and reliable recovery calculated from actual scores post-treatment.

^‡After transformation to 0–40 scale for calculation of percentage change from scores of 10–50.