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Table 2 Effect of PM 2.5 exposure on cardiovascular responses in SH rats

From: PM2.5-induced cardiovascular dysregulation in rats is associated with elemental carbon and temperature-resolved carbon subfractions

Response Study dfN dfD p-value
Heart rate 1 35 421 *0.0246
  2 35 455 0.365
  3 35 493 *0.0008
  4 35 504 0.661
lnSDNN 1 35 421 0.591
  2 35 455 0.061
  3 35 493 *0.0372
  4 35 504 0.356
lnRMSSD 1 35 421 0.076
  2 35 455 0.546
  3 35 493 0.289
  4 35 504 0.266
MAP 1 35 391 *0.0124
  2 35 456 *0.0107
  3 35 495 *0.0106
  4 35 504 0.459
Systolic 1 35 391 *0.0239
  2 35 456 *0.0127
  3 35 495 *0.0193
  4 35 504 0.476
Diastolic 1 35 391 *0.0085
  2 35 456 *0.0097
  3 35 495 *0.0059
  4 35 504 0.415
  1. Data are expressed as p-values for the interaction of Exposure (Air vs. PM2.5) and time (1 h intervals). dfN-degrees freedom for subjects, dfD degrees freedom for observations. *p < 0.05.