. Author manuscript; available in PMC: 2014 Dec 1.

Published in final edited form as: Int J Geriatr Psychiatry. 2014 May 1;29(12):1255–1261. doi: 10.1002/gps.4105

Table 2.

Outcome measures by intervention for completers

		Intervention		Analyses
Measure	All (N= 23)	PST-PC (N= 10)	DIET (N= 13)	Test statistic	df	p	Effect size	Mag^b
Baseline
Beck Depression Inventory	9.7 ± 4.7	9.0 ± 4.0	10.2 ± 5.4	t = 0.54	18	0.594	d = 0.18
Hamilton Rating Scale for Depression	10.5 ± 4.5	8.8 ± 3.5	11.6 ± 4.9	t = 1.40	18	0.178	d = 0.47	Sm
Short form health survey: mental component	43.1 ± 12.3	37.9 ± 12.1	46.3 ± 11.8	t = 1.59	19	0.129	d = 0.50	Med
Short form health survey: physical component	43.0 ± 10.5	47.6 ± 8.5	40.2 ± 11.0	t = 1.63	19	0.120	d = 0.53	Med
Social Problem Solving Inventory	100 ± 13.1	98.7 ± 17.2	101 ± 10.0	t = 0.40	20	0.692	d = 0.12
End of treatment^a
Beck Depression Inventory^c	6.7 ± 5.3	4.8 ± 5.2	8.3 ± 5.0	χ² = 0.86	1	0.353	OR = 0.41	Med
Hamilton Rating Scale for Depression	6.7 ± 5.9	3.6 ± 4.1	8.8 ± 6.1	χ² = 2.99	1	0.084	d = −0.66	Med
Short form health survey: mental component	50.5 ± 11.9	51.3 ± 16.7	50.1 ± 8.5	χ² = 9.60	1	0.002	d = 1.00	Lg
Short form health survey: physical component	42.3 ± 10.3	46.7 ± 9.4	39.6 ± 10.2	χ² = 0.29	1	0.588	d = 0.15
Social Problem Solving Inventory	104 ± 10.3	105 ± 13.5	104 ± 8.0	χ² = 1.09	1	0.296	d = 0.30	Sm

PST-PC, Problem Solving Therapy for Primary Care; DIET, dietary education; mag, magnitude; lg, large; sm, small; N, number; df, degrees of freedom; t refers to student's t-test; χ² refers to chi-square.

The data are reported as means ± standard deviation.

Test statistic and effect size for Beck Depression Inventory derived from cumulative logistic regression. Test statistics and effect sizes for remaining outcomes were derived from linear regressions of standardized scores. All models were adjusted for baseline score.

Cohen's conventions; d refers to Cohen's d; OR refers to odds ratio.

A non-normal distribution required binning: 0–5, 6–14, and 15–63.