Fig. 3

Item locations for our US cohort, compared to previously published Swedish, UK, and Australian cohorts. Item 1 “I’ve been feeling optimistic about the future” was not retained in our sample, but was retained in the Swedish, UK, and Australian cohorts, which is why only 6 of the 7 item locations are shown in this Figure for the Swedish and UK versions; and only 9 of the 10 items in the Australian version. The Australian study reported item locations for the original 14-item scale, not the final 10-item scale. The final 10-item version might have slightly different item locations, but they were not reported in the manuscript