Table 2

SXCI (CR ≥ 3) incidences in healthy females of various age ranges and ethnic groups
Authors Subjects Numbers examined Age range (years) Overall Incidences (%) SXCI (CR ≥ 3) incidences of healthy females of various age ranges (%) P-value
0 25- 32 16- 50 35- 50 51- 70 ≥60 ≥75 71- 96
Lau et al.[8] Canadian 27 35-50 33 * * * 33 * * * * *
Busque et al.[5] American 295 0-96☆☆ 17 9 16 * * * 38 * * <0.0001**
Gale et al.[6] English 174 17-96 38 * * 22 * * * 6 * < 0.0001*
Tonon et al.[7] Italian 68 25-32, ≥75 23 * 17 * * * * 45 * < 0.02
Knudsen et al.[11] Norwegian 80 19-90 65 * 0.034**
Mossner et al.[12] German with Caucasian background 139 0-40, 41–64, 65-97 34§ * 0.0008**
Racchi et al.[13] Italian 166 8-94 30 * 23 26 * * 37 40 * >0.05**
Gentilini et al.[28] Italian 148 31-100 38.5 * <0.0001**
Amos-Landgraf et al.[32] Finnish American Jewish 1 005 0, >13 25 * 0.008※※
Present study Chinese 356 0-96 15 4.3 6.1 7.8 9.4 10.8 27.6 40.6 38.0 0**

* Not mentioned in the study; ** The likelihood ratio test; skewed to the extent of >70:30 or <30:70; ※ ※F test.

§allelic ratios: ≥ 4:1 or 80% predominant expression of one allele.

The χ2 test; ☆☆ age constitution: neonates (n = 162); younger adults (25–32 y) (n = 67); older adults up to 60 y (n = 66).

Li et al.

Li et al. Diagnostic Pathology 2013 8:55   doi:10.1186/1746-1596-8-55

Open Data