Table 3.

Comparison of the measured dose and regression estimates of dose (mSv) (n=1518)

	Measured dose (SD)	Estimated dose (SD)	Ratios (SD)
Overall	0.33 (0.11)	0.33 (0.09)	0.99 (0.35)
Time period
To school	0.37 (0.14)	0.32 (0.07)	1.13 (0.43)**
At school	0.32 (0.10)	0.33 (0.09)	0.98 (0.31)
At home	0.33 (0.11)	0.33 (0.09)	0.99 (0.34)
Outdoors	0.32 (0.10)	0.33 (0.09)	0.97 (0.33)*
At bedtime	0.33 (0.11)	0.33 (0.09)	0.99 (0.35)

*p<0.05, **p<0.01: paired t test.