Table 4 The paired samples t test (at p-value is significant below 0.05, and confidence level equal to 95%) which demonstrates the significant difference in measured external radiation dose at the release time (T) of the patient at a different distance (D)
From: Assessment of external radiation dose rate after 18FDG-PET/CT examination
Paired differences | t | Sig. (2-tailed) | |||||
|---|---|---|---|---|---|---|---|
Mean | SD | 95% confidence interval of the difference | |||||
Lower | Upper | ||||||
Pair 1 | T0D0–T0D2m | 403.7 | 129.6 | 379.9 | 427.5 | 33.7 | 0.000 |
Pair 2 | T0D0–T30D0 | 131.2 | 86.8 | 115.3 | 147.1 | 16.4 | 0.000 |
Pair 3 | T0D0–T60D0 | 202.3 | 105.7 | 182.9 | 221.6 | 20.7 | 0.000 |
Pair 4 | T0D0–PAD0 | 253.1 | 122.5 | 230.7 | 275.6 | 22.4 | 0.000 |