Table 6 Sample statistics of the hair counts from 4 Fitzpatrick skin types of the complete data ( n = 48)
Sample statistics | Baseline | Week 4 | Week 8 | Week 14 | Week 20 | Week 26 |
|---|---|---|---|---|---|---|
(a) Fitzpatrick skin type I (n = 6) | ||||||
Minimum | 22.0 | 37.0 | 31.0 | 21.0 | 26.0 | 11.0 |
25% Percentile | 37.8 | 51.3 | 46.0 | 33.8 | 29.8 | 24.5 |
Median | 119.0 | 119.0 | 131.0 | 124.5 | 133.5 | 139.5 |
75% Percentile | 197.0 | 213.8 | 199.8 | 217.0 | 203.8 | 242.3 |
Maximum | 227.0 | 279.0 | 256.0 | 250.0 | 269.0 | 264.0 |
Mean | 119.50 | 133.70 | 130.20 | 127.30 | 129.20 | 136.30 |
Standard deviation | 83.47 | 94.21 | 87.43 | 94.15 | 96.38 | 107.30 |
Standard error | 34.08 | 38.46 | 35.69 | 38.44 | 39.35 | 43.82 |
95% Confidence interval | (31.9, 207.1) | (34.8, 232.5) | (38.4, 221.9) | (28.5, 226.1) | (28.0, 230.3) | (23.7, 249.0) |
(b) Fitzpatrick skin type II (n = 13) | ||||||
Minimum | 26.0 | 89.0 | 33.0 | 63.0 | 74.0 | 64.0 |
25% Percentile | 104.5 | 116.5 | 101.5 | 120.0 | 121.0 | 109.0 |
Median | 150.0 | 180.0 | 156.0 | 185.0 | 157.0 | 163.0 |
75% Percentile | 192.0 | 196.0 | 185.5 | 223.0 | 200.5 | 213.5 |
Maximum | 297.0 | 302.0 | 329.0 | 335.0 | 308.0 | 313.0 |
Mean | 150.30 | 166.50 | 155.20 | 179.60 | 166.70 | 164.90 |
Standard deviation | 72.79 | 56.90 | 71.08 | 70.25 | 62.89 | 69.72 |
Standard error | 20.19 | 15.78 | 19.71 | 19.49 | 17.44 | 19.34 |
95% Confidence interval | (106.3, 194.3) | (132.2, 200.9) | (112.2, 198.1) | (137.2, 222.1) | (128.7, 204.7) | (122.8, 207.1) |
(c) Fitzpatrick skin type III (n = 15) | ||||||
Minimum | 48.0 | 51.0 | 42.0 | 77.0 | 52.0 | 75.0 |
25% Percentile | 138.0 | 144.0 | 137.0 | 149.0 | 143.0 | 133.0 |
Median | 166.0 | 167.0 | 166.0 | 177.0 | 168.0 | 163.0 |
75% Percentile | 214.0 | 211.0 | 217.0 | 226.0 | 224.0 | 226.0 |
Maximum | 280.0 | 274.0 | 309.0 | 314.0 | 304.0 | 320.0 |
Mean | 167.70 | 172.00 | 172.20 | 182.10 | 173.40 | 177.80 |
Standard deviation | 62.89 | 59.82 | 67.89 | 64.64 | 67.00 | 71.35 |
Standard error | 16.24 | 15.45 | 17.53 | 16.69 | 17.30 | 18.42 |
95% Confidence interval | (132.8, 202.5) | (138.9, 205.1) | (134.6, 209.8) | (146.3, 217.9) | (136.3, 210.5) | (138.3, 217.3) |
(d) Fitzpatrick skin type IV (n = 14) | ||||||
Minimum | 128.0 | 142.0 | 130.0 | 156.0 | 140.0 | 153.0 |
25% Percentile | 163.0 | 160.0 | 155.5 | 179.5 | 171.5 | 179.3 |
Median | 185.5 | 197.0 | 211.5 | 200.0 | 196.0 | 211.0 |
75% Percentile | 225.8 | 244.8 | 269.0 | 265.5 | 256.0 | 244.8 |
Maximum | 269.0 | 268.0 | 286.0 | 292.0 | 311.0 | 321.0 |
Mean | 191.20 | 202.60 | 211.40 | 218.40 | 208.20 | 216.10 |
Standard deviation | 42.61 | 43.48 | 55.40 | 49.19 | 51.44 | 48.74 |
Standard error | 11.39 | 11.62 | 14.81 | 13.15 | 13.75 | 13.03 |
95% Confidence interval | (166.6, 215.8) | (177.5, 227.7) | (179.4, 243.4) | (190.0, 246.8) | (178.5, 237.9) | (187.9, 244.2) |