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Table 5 Test results for a linear trend of the hair growth for each age group

From: “Cold” X5 Hairlaser™ used to treat male androgenic alopecia and hair growth: an uncontrolled pilot study

Dataset Age group Sample size (n) Repeated measures ANOVA Post-hoc linear trend test
F p-value p-value Slope R2value
Complete data ( n= 48) Young 10 1.65 0.1663
Mid 19 3.76 0.0039 0.0013 1.520 0.0086
Old 19 3.24 0.0098 0.0009 1.229 0.0033
Mixed data ( n= 70) Young 15 2.66 0.0295 0.1054 1.215 0.0036
Mid 29 5.12 0.0002 0.0004 1.337 0.0066
  Old 26 5.38 0.0002 < 0.0001 1.455 0.0046