Table 2 Comparison of mean C2 measured by KoKo DigiDoser and Mefar dosimeter.

Baseline

2.42 ± 0.35 (2.30-2.53)

2.32 ± 0.43 (2.18-2.46)

0.205

1 hr

2.45 ± 0.38 (2.32-2.57)

2.50 ± 0.39 (2.37-2.63)

0.455

2 hr

2.48 ± 0.37 (2.36-2.60)

2.51 ± 0.42 (2.38-2.66)

0.556

4 hr

2.45 ± 0.33 (2.34-2.55)

2.53 ± 0.41 (2.40-2.66)

0.174

2 wk

2.37 ± 0.39 (2.24-2.50)

2.45 ± 0.39 (2.32,2.58)

0.179