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. 2017 Aug 21;12(8):e0183305. doi: 10.1371/journal.pone.0183305

Table 9. Menarche commencement distributions among spheno-occipital synchondrosis closure stages.

Menarche Commencement
Yes No Total
Stage 0 2(8.7%) 21(91.3%) 23 (100%)
Stage 1 16(61.5%) 10(38.5%) 26(100%)
Stage 2 32(82%) 7(18%) 39(100%)
Stage 3 84(96.5%) 3(3.5%) 87(100%)
Total 134(76.5%) 41(23.5%) 175(100%)