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Table 1 Descriptive IGF-1 (ng/ml) statistics for each cervical stage

From: Serum IGF-1 levels as a clinical tool for optimizing orthodontic treatment timing

Cervical stage Subjects Mean IGF-1 (ng/ml) SD 95% confidence interval for mean Minimum Maximum
     Lower bound Upper bound   
CS-3 15 318 17.4 283 353 171 433
CS-4 15 352 17.7 317 387 252 525
CS-5 15 279 10.8 257 301 206 372
  1. ANOVA: p value = 0.008, highly significant. SD, standard deviation.