Effects of problem-focused versus emotion-focused behavioral interventions on peptic ulcer recurrence: a 4-year retrospective cohort study.

All tests were two-sided, and P < 0.05 was considered nominally significant. 3 Results 3.1 Participant flow and attrition Of the 167 patients included in the analysis, documented clinical encounters sufficient to ascertain recurrence status over the 4-year period were available for 160 (95.8%) at approximately 6 months post-discharge, 156 (93.4%) at approximately 12 months, 152 (91.0%) at approximately 18 months, and 148 (88.6%) at approximately 24 months or beyond ( Figure 1 ).

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