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Table 2 The characteristics of five references groups

From: Bibliometric analysis of cardiometabolic disorders studies involving NO2, PM2.5 and noise exposure

Exposure Health Outcome N Publication Year Times Cited
Earliest Median Total Mean Median
NO2 (only) Cardiometabolic 87 1994 2012 2724 34.1 24
Cardiovascular 82 1994 2012 2384 31.8 23
Diabetes 13 1997 2012 503 45.7 27
PM2.5 (only) Cardiometabolic 465 1995 2014 24,713 55.0 18
Cardiovascular 420 1995 2014 22,712 56.1 17
Diabetes 109 2001 2015 5789 54.1 23
Noise (only) Cardiometabolic 100 1994 2011 3658 40.2 18
Cardiovascular 94 1994 2011 3584 41.2 21
Diabetes 12 2007 2014.5 174 19.3 13
NO2 + PM2.5 Cardiometabolic 332 1996 2013 14,935 47.4 20
Cardiovascular 296 1996 2013 13,969 49.9 21.5
Diabetes 41 2000 2015 2673 43.1 17
NO2/PM2.5 + noise Cardiometabolic 49 2007 2014 1532 31.3 20
Cardiovascular 41 2007 2014 1310 32.0 22
Diabetes 18 2008 2016 441 24.5 16.5