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Table 1
Summary of the samples.
| “main sample” | “control sample” | |||
|
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| TOTAL | 852 | 4508 | ||
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| in FIRST | 811 | 4508 | ||
| (radio det. – radio undet.) | (74−737) | (4508−0) | ||
| Radio class.: | RL | 59 | 3796 | |
| det. RI | 15 | 702 | ||
| non-RL | 1 < ℛup.lim ≤ 10 | 443 | 0 | |
| RQ | 7 | 10 | ||
| n.c. | 287 | 0 | ||
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| in ROSAT | 69 | 501 | ||
| in ROSAT & in FIRST | 67 | 501 | ||
| (radio det. – radio undet.) | (13−54) | (501−0) | ||
| Radio class.: | RL | 9 | 398 | |
| det. RI | 4 | 99 | ||
| non-RL | 1 < ℛup.lim ≤ 10 | 35 | 0 | |
| RQ | 5 | 4 | ||
| n.c. | 14 | 0 | ||
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