Percentages and means for baseline characteristics and 2-year course indicators were provided across age groups. Additionally, these characteristics were associated with continuous age in simple regression analyses, with age as the outcome measure. For all four 2-year depression indicators, we provided unadjusted percentages, means, and incidence rates across all age categories. Again, associations between these indicators and continuous age were also assessed with simple linear regression analyses. We examined associations between continuous age (per 10-year increase) and presence of a depression diagnosis after 2 years with logistic regression.
I guess "presence of a depression diagnosis" means "true", "that candidate is suffering from depression and anxiety disorders".
Is my understanding correct?
Is "presence of a diagnosis" a common phrase in medical science?