Stages of change by time point and group. Stage of change was measured on a Likert scale of 1 through 6 based on the transtheoretical model (stages of change); 1 represented pre-contemplation, 2 represented contemplation, 3 represented motivation, 4 represented action (<3 months), 5 represented action (for 3–6 months) and 6 represented maintenance (>6 months). Asterisks indicate significant differences from run-in (pre-intervention), within groups: p ≤ 0.001 at all time points in both groups. GLB (n = 70 with mean value imputation): Run-In 3.50 ± 0.18 (mean ± SE), 95% CI: 3.10–3.82; Baseline 3.76 ± 0.18, 95% CI: 3.41–4.12; 3 Months* 4.15 ± 0.15, 95% CI: 3.85–4.44; 6 Months* 4.37 ± 0.17, 95% CI: 4.03–4.70; 12 Months* 4.26 ± 0.19, 95% CI: 3.89–4.63. GLB+LGx (n = 70 with mean value imputation): Run-In 3.77 ± 0.16 (mean ± SE), 95% CI: 3.46–4.09; Baseline 3.70 ± 0.15, 95% CI: 3.40–4.00; 3 Months* 4.27 ± 0.12, 95% CI: 4.02–4.51; 6 Months* 4.62 ± 0.14, 95% CI: 4.33–4.90; 12 Months* 4.70 ± 0.16, 95% CI: 4.39–5.02. GLB: Group Lifestyle Balance™; LGx: lifestyle genomics.