This work reports on the subject content analysis performed to 1323 records retrieved from international databases, related
to the Mexican production on environmental health. The U.S. National Library of Medicine's Medical Subject Headings (MeSH)
and BIREME's Health Sciences Descriptors (DeCS) were used as guiding tools to select the subject content of records. Overall,
97 descriptors were identified; 65 corresponded to MeSH terms and 32 were, generated by the authors. Results indicated that
most of the production was related to environmental pollution studies focused on water and air pollution, and environmental
monitoring. Through the development of hierarchical models, patterns of subjects covered and uncovered could be easily identified.
Further lines of action and research are proposed by the authors.
Measurement of the effectiveness of science policies is analyzed as a multi-level problem. Journal-journal citations are discussed as a potential candidate for a domain beyond the control of policy-makers and authors or research groups and therefore may function as a relatively stable and easily accessible baseline for the calibration of outputs and outcomes of science policy. A method is developed, usingSCPsJCRs which is then applied to the two cases of water pollution and humanisation of labor. This method can also be used as a simple indicator for the development of journal-journal citation patterns over time.