Table 2.
Comparison of changes in skin properties in the full analysis set population.
Variable | Observed values | Changes from baseline | ||||||||
---|---|---|---|---|---|---|---|---|---|---|
CTP (n = 36) | CG (n = 38) | CTP (n = 36) | Pa | CG (n = 38) | Pa | Pb | Pc | Pd | Pe | |
Transepidermal water loss (g/m2/h) | ||||||||||
Baseline | 6.08 ± 2.1 | 5.64 ± 1.4 | ||||||||
At 6 weeks | 4.43 ± 1.6 | 4.25 ± 1.1 | −1.65 ± 1.9 | <0.001 | −1.39 ± 1.9 | <0.001 | 0.577 | 0.675 | 0.411 | 0.445 |
At 12 weeks | 5.14 ± 1.5 | 5.31 ± 1.5 | −0.94 ± 1.8 | 0.004 | −0.33 ± 1.9 | 0.297 | 0.168 | 0.024 | 0.032 | 0.031 |
Skin hydration (A.U.) | ||||||||||
Baseline | 192.5 ± 21.4 | 199.7 ± 21.9 | ||||||||
At 6 weeks | 199.2 ± 19.6 | 200.1 ± 24.0 | 6.73 ± 22.0 | 0.076 | 0.45 ± 21.9 | 0.900 | 0.223 | 0.243 | 0.204 | 0.214 |
At 12 weeks | 209.0 ± 18.7 | 212.1 ± 16.0 | 16.50 ± 21.7 | <0.001 | 12.44 ± 21.7 | <0.001 | 0.423 | 0.325 | 0.335 | 0.278 |
Skin elasticity (mm) | ||||||||||
Baseline | 0.40 ± 0.11 | 0.42 ± 0.10 | ||||||||
At 6 weeks | 0.35 ± 0.10 | 0.36 ± 0.10 | −0.04 ± 0.1 | 0.050 | −0.06 ± 0.1 | 0.002 | 0.574 | 0.514 | 0.557 | 0.642 |
At 12 weeks | 0.33 ± 0.10 | 0.36 ± 0.09 | −0.07 ± 0.1 | <0.001 | −0.05 ± 0.1 | 0.002 | 0.480 | 0.471 | 0.546 | 0.603 |
Lt. crow's–feet visual score | ||||||||||
Baseline | 2.25 ± 0.73 | 2.47 ± 0.98 | ||||||||
At 6 weeks | 1.94 ± 0.63 | 1.97 ± 0.88 | −0.31 ± 0.6 | 0.003 | −0.50 ± 0.6 | <0.001 | 0.145 | 0.207 | 0.148 | 0.208 |
At 12 weeks | 1.61 ± 0.60 | 1.71 ± 0.73 | −0.64 ± 0.6 | <0.001 | −0.76± 0.5 | <0.001 | 0.349 | 0.307 | 0.303 | 0.312 |
Rt. crow's-feet visual score | ||||||||||
Baseline | 2.11 ± 0.78 | 2.24 ± 0.94 | ||||||||
At 6 weeks | 1.61 ± 0.64 | 1.82 ± 0.83 | −0.50 ± 0.6 | <0.001 | −0.42 ± 0.5 | <0.001 | 0.524 | 0.417 | 0.512 | 0.431 |
At 12 weeks | 1.44 ± 0.56 | 1.47 ± 0.65 | −0.67 ± 0.6 | <0.001 | −0.76 ± 0.6 | <0.001 | 0.514 | 0.497 | 0.537 | 0.564 |
Lt. wrinkles by vision meter | ||||||||||
Baseline | 28.0 ± 6.2 | 25.8 ± 6.0 | ||||||||
At 6 weeks | 31.4 ± 6.9 | 29.3 ± 5.4 | 3.33 ± 9.2 | 0.037 | 3.44 ± 8.3 | 0.011 | 0.960 | 0.797 | 0.985 | 0.897 |
At 12 weeks | 29.8 ± 4.8 | 30.2 ± 6.1 | 1.82 ± 7.1 | 0.131 | 4.41 ± 7.9 | 0.002 | 0.141 | 0.181 | 0.241 | 0.286 |
Rt. wrinkles by vision meter | ||||||||||
Baseline | 27.2 ± 6.0 | 27.9 ± 6.8 | ||||||||
At 6 weeks | 29.3 ± 5.4 | 28.4 ± 6.1 | 2.15 ± 7.9 | 0.117 | 0.57 ± 8.0 | 0.663 | 0.406 | 0.390 | 0.334 | 0.395 |
At 12 weeks | 29.3 ± 5.0 | 30.5 ± 7.0 | 2.08 ± 7.4 | 0.100 | 2.66 ± 8.6 | 0.065 | 0.758 | 0.894 | 0.976 | 0.942 |
Values are presented as mean ± SD.
Paired t-test.
Two-sample t-test.
Repeated measures ANCOVA (adjusted for temperature and humidity).
ANCOVA (adjusted for ultraviolet A).
ANCOVA (adjusted for temperature, high temperature, and ultraviolet A).