Studies examined a range of air pollutants, with 45 investigating both particulate matter and gaseous pollutants. PM2.5 was examined in 32 studies, PM10 alone in four, and both PM10 and PM2.5 in 16. Analysis of 180+ Indian studies shows over 91% link air pollution to health effects across both urban and rural areas, including PM2.5/PM10 and gaseous pollutants.