Air pollution related respiratory morbidity in central and north-eastern Bombay.

A study of 4 comparable communities in central & northeastern Bombay (2 each) among randomly matched 349 subjects in 1988-9, along with ambient sulfur dioxide (SO2), Nitrogen dioxide (NO2) & suspended particulate matter (SPM) air monitoring was carried out. The levels in winter were higher particularly for SO2 in Parel (upto 584 micrograms) in Maravali; Deonar showed lower pollution. There were inter-area differences for housing, income, residential history but age-sex differences were small; these were reduced by matching.