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. Author manuscript; available in PMC: 2012 Jun 1.
Published in final edited form as: Environmetrics. 2011 Jun;22(4):553–571. doi: 10.1002/env.1086

Table 2.

RMSPE (Root Mean Square Predictive Error), MAPE (Mean Absolute Predictive Error), average length of the 95% predictive intervals (PI) and empirical coverage of the 95% predictive intervals obtained using the model that characterizes exposure using the third metric, that is, respectively, the “normalized area ambient exposure was above 15 μg/m3” and the “normalized area personal exposure was above 15 μg/m3. The time window of exposure considered is the course of the entire pregnancy. Each statistic is reported in grams

RMSPE MAPE Average length of
95% PI		 Empirical coverage of
95%
Ambient exposure
(without spatial effects)		 428.52 334.71 1533.45 91.76%
Ambient exposure
(with spatial effects)		 424.98 331.57 1632.32 94.11 %
Personal exposure
(with spatial effects)		 393.19 310.67 1666.09 97.74 %