subhead only; includes "forecasting" & "futurology"; for a continuum from past to present, present to future; see MeSH scope note in Introduction; indexing policy: Manual 19.8.76; DF: /trends or /TD CATALOG: may be subdivided geographically
Used for the manner in which a subject changes, qualitatively or quantitatively, with time, whether past, present, or future. It excludes discussions of the course of disease in particular patients.
search policy: Online Manual; use: main heading/TD or TD (SH) or SUBS APPLY TD
78; used with Category F4, G1-3, I & N 1978-79; E, F4, G1-3, I & N 1980-86; E, F4, G1-3, I, L & N 1987; E, F4, G1-3, I, L, N & SMOKING 1988; E, F4, G1-3, I, L, N & SMOKING+ 1989; E, F4, G1-2, I2-3 & N2-4 1990 forward