Irisin combined index to diagnose central precocious puberty in girls: a cross-sectional study

BMC Pediatrics

Table 2 The percentage of CPP group, PPP group and normal control group in each tanner stage

Tanner stage	CPP group (n = 43)	PPP group (n = 44)	Normal control group (n = 24)
1	0.00%	0.00%	100%
2	55.81%	97.73%	0.00%
3	41.86%	2.27%	0.00%
4	2.33%	0.00%	0.00%
5	0.00%	0.00%	0.00%

Tanner stage 1, when hormones are hard at work behind the scenes; Tanner stage 2, when the first physical signs of puberty occur; Tanner stage 3, the growth spurt stage; Tanner stage 4, the continuation of development; Tanner stage 5, the final stage

ISSN: 1471-2431