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Table 4 Methodological quality of studies appropriate for primary care

From: Primary care-based educational interventions to decrease risk factors for metabolic syndrome for adults with major psychotic and/or affective disorders: a systematic review

Author, date Type of study Sample size Power analysis described How participant characteristics described Review board approved Randomization process described Comparator Blinding described Evidence base for intervention described Statistical analysis described
Brar et al.,[42] RCT 71 Yes Narrative Yes No Monthly weight checks and encouragement of weight loss No Yes; table with previous studies Yes (paired t-tests, logistic regression, ANCOVA, Cochran-mantel-Haenszel)
Khazaal et al.,[51] RCT 61 No Table Yes No Control group with brief nutritional education No Yes; previous "Apple Pie" study Yes (t-tests, Chi-square, MANOVA, MANCOVA, Fisher's exact significance tests, Cochran's Q test)
Kwon et al.,[53] RCT 48 Yes Table Yes No Routine care with verbal diet and weight management recommendations. Control group also given food and exercise diaries. No No Yes (t-test and ANCOVA)
McKibbin et al.,[56] RCT 64 No Table Yes No Usual care with three health-related brochures distributed No Yes; previous DART study and theoretical orientation Yes (ANOVA, t-tests, chi-square)
Skrinar, Huxley, Hutchison, Menninger and Glew,[63] RCT 20 No Table Yes No Waiting list control group No Yes; cites literature about role of exercise in weight management Yes (ANOVA)
Weber and Wyne,[65] RCT 17 No (pilot study) Table Yes No Control group received treatment as usual and were weighed every four weeks. Yes Yes; previous Diabetes Prevention Project Yes (t-testt-test, statistical significance set at 0.05)