Many are caused by chance chromosomal abnormalities in the embryo that are unlikely to affect the next pregnancy.
After checking that the findings were not caused by chance or error, the commission asked the hospital to explain.
In the European study, among men 70 or older, there were more deaths in the P.S.A. screening group, although the trend could be caused by chance.
They found a strong correlation.The results indicate that two-thirds of the variation in cancer risk between different tissues is caused by chance mutations associated with cell division.
Bail noted that the small difference in Democrats' views could have been caused by chance, but even so, despite having a more diverse news feed, neither Republicans nor Democrats became more sympathetic to the other side.
This is not the same as saying that two-thirds of cancer cases are caused by chance, because the results do not offer any information about the relative rates of occurrence of the cancers in question.
Furthermore, the fact that inter-brain synchrony was disrupted in the random shuffling cross-validation analysis confirmed that those connections were not caused by chance or artifact, but were due to the paired face-to-face interaction (Fig. S3A and S3B).
Only few of these detected series are likely caused by chance alone, as in fully unrelated sets of peaks.
With this acceptance level (alpha 0.05), it can be suggested that 5% of the non-Mendelian segregation were caused by chance.
The conducted experiments show that in general, the performance of the model is considerably better inside the domain than outside, and that this performance gain is not caused by chance due to the changed ligand/decoy ratio.
Bert Vogelstein and Christian Tomasetti, from John Hopkins University, analysed 31 different cancers and, writing in the journal Science this week, they say most of them are caused by chance cell mutations rather than any external factors.
