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Table 4 Sample statistics of the hair counts from 3 age groups of the complete data ( n= 48)

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

Sample statistics Baseline Week 4 Week 8 Week 14 Week 20 Week 26
(a) Age group: Young (40 or below) (n = 10)
Minimum 26.0 89.0 33.0 63.0 74.0 64.0
25% Percentile 119.8 137.8 105.0 114.8 87.8 85.5
Median 191.0 198.0 220.5 224.0 202.0 227.0
75% Percentile 224.8 249.3 261.0 264.8 257.8 239.5
Maximum 280.0 279.0 286.0 292.0 311.0 321.0
Mean 170.40 193.60 188.30 203.90 187.00 192.60
Standard deviation 81.78 62.11 87.63 79.59 83.69 85.27
Standard error 25.86 19.64 27.71 25.17 26.46 26.96
95% Confidence Interval (111.9, 228.9) (149.2, 238.0) (125.6, 251.0) (147.0, 260.8) (127.1, 246.9) (131.6, 253.6)
(b) Age group: Mid (between 41 and 50 inclusive) (n = 19)
Minimum 43.0 51.0 42.0 38.0 26.0 11.0
25% Percentile 138.0 155.0 152.0 159.0 157.0 147.0
Median 165.0 182.0 166.0 186.0 178.0 180.0
75% Percentile 194.0 207.0 208.0 219.0 204.0 228.0
Maximum 269.0 262.0 272.0 259.0 265.0 264.0
Mean 161.60 171.90 170.30 183.30 174.60 178.70
Standard deviation 54.98 53.10 56.82 55.01 58.58 62.84
Standard error 12.61 12.18 13.03 12.62 13.44 14.42
95% Confidence interval (135.1, 188.1) (146.4, 197.5) (142.9, 197.7) (156.7, 209.8) (146.3, 202.8) (148.5, 209.0)
(c) Age group: Old (between 51 to 60 inclusive) (n = 19)
Minimum 22.0 37.0 31.0 21.0 31.0 29.0
25% Percentile 109.0 114.0 110.0 126.0 133.0 114.0
Median 169.0 164.0 159.0 175.0 168.0 157.0
75% Percentile 203.0 203.0 206.0 196.0 203.0 206.0
Maximum 297.0 302.0 329.0 335.0 308.0 320.0
Mean 162.50 167.40 169.60 177.20 172.20 175.40
Standard deviation 69.56 70.61 77.89 79.36 72.17 78.97
Standard error 15.96 16.20 17.87 18.21 16.56 18.12
95% Confidence interval (129.0, 196.1) (133.4, 201.5) (132.0, 207.1) (139.0, 215.5) (137.4, 206.9) (137.3, 213.4)