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. 2021 Jul 13;12:390. doi: 10.1186/s13287-021-02438-y

Table 1.

Demographics data of the study groups

Group Gender (male/female) Side right/left Age (years) BMI (kg/m2) Acro stage Yield of exosomes (1010/g)
NONFH 24/16 21/19 63.95 ± 6.11 22.84 ± 2.71

stage III n = 19

stage IV n = 21

2.89 ± 1.15
FNF 22/18 16/24 64.08 ± 5.53 22.81 ± 2.01 1.26 ± 0.46

Note: Data are presented as mean ± standard error (SEM). “NONFH” represents the group of nontraumatic osteonecrosis of the femoral head. “FNF” represents the group of femoral neck fracture. “BMI” means body mass index