Table 1

Interindividual variation in healthy individuals by the comet assay

PopulationNAge spanRange (fold)Mean or median (± SD)Dispersion coefficientComet parameteraRef. no.
American4124–93NRb10.3 ± 5.91c0.57TI30
Bulgarian19NRNR5.37 ± 2.480.46TM29
Chinese41NRNR38.89 ± 8.890.23TM59
Czech1920–591.76.14 ± 0.850.14Tl65
Czech1918–527NRNRTM18
Czechd194NR4.25.59 ± 0.190.03Tl19
Czech1329–52NR0.6 ± 0.30.33TM78
Danish640–52714.25 ± 8.390.59TM9
Egyptian1020–57NR11.1 ± 4.020.36TL72
English918–601.26.72 ± 0.90.13TM51
English42NRNR0.12 ± 0.30.25TM41
English13920–68NR0.61 ± 0.350.57TM20
French11NR3.330.45 ± 12.32e0.40Arb57
French2421–623,12.98 ± 0.90f0.30TM84
Gambian2818–701.66.42 ± 1.690.26TM51
Germang1019–37269.4 ± 16.1f0.23Arb14
German1025–344.40.061 ± 0.0350.57TN81
German3525–67NR1.5 ± 0.50.30TM21
German4720–59NR0.041 ± 0.030.73TM22
German9NRNR2.23 ± 0.090.09TM50
German823–3420.046 ± 0.0120.26TM85
German820–395.70.19 ± 0.130.71TM86
German829–341.22.1 ± 0.10.02TM48
German1322–703.11.5 ± 0.60.40TM87
Indian12NRNR0.49 ± 0.130.27Tl88
Italian6210–751.842 ± 5.350.13Cl23
Italian12NR5.80.94 ± 0.440.47TM28
Italian20NRNR38.92 ± 8.060.21Cl24
Mexicanh16≈19148.76 ± 3.80.43Tl25
Mexicani32≈192613.97 ± 9.320.67Tl25
Polish4024–651224.45 ± 17.010.70TM26
Polish4123–521.4134.9 ± 18.60.09Arb58
Slovakian16NRNR88.46 ± 32.69f0.37Arb73
Slovakian18NRNR14.7 ± 4.4f0.30%T64
Spanish11NRNR39.25 ± 5.90.15Cl63
Swedish95jNRNR39.9 ± 15.40.39TM55
Swedish31NRNR0.69 ± 0.450.65TM75
Turkish41NRNR111.39 ± 7.50.07Arb56
Turkish817–43NR0.65 ± 0.471.38Tl27
Turkishk3019–381.8248 ± 44.70.18Arb66
Turkishk3019–431.6237.3 ± 30.70.13Arb61
  • a Comet parameter: Arb, arbitrary; Cl, comet length; Tl, tail length; TM, tail moment; %T, % DNA in the tail.

  • b NR, not reported.

  • c Calculated from old and young individuals combined.

  • d Calculated from the part of the study consisting of pregnant women.

  • e Calculated from samples taken at the beginning of the spraying season.

  • f The data is estimated from graphs.

  • g Based on 5–8 repeated measurements.

  • h Data reported population living in the north part of Mexico City.

  • i Data reported population living in the south part of Mexico City.

  • j Only individuals exposed to less than 200 Bq/m3 radon.

  • k Calculated as mean arbitrary unit.