Background
Methods
LLLT device and data acquisition
Treatment regime and efficacy assessment
Statistical analysis
Results
Mild (n = 928) | Moderate to severe (n = 4 55) | P value | |
---|---|---|---|
Age groups, years | |||
18–30 | 451 (48.6) | 199 (43.7) | 0.335 |
30, 40 | 352 (37.9) | 183 (40.2) | |
40, 50 | 105 (11.3) | 62 (13.6) | |
> 50 | 20 (2.2) | 11 (2.4) | |
Gender | |||
Male | 699 (75.3) | 311 (68.4) | 0.007 |
Female | 229 (24.7) | 144 (31.6) | |
Use period, times | |||
Median (IQR) | 133 (88,206.2) | 142 (94,224) | 0.017 |
Treatment regime | |||
LLLT only | 591 (63.7) | 287 (63.1) | 0.328 |
LLLT and minoxidil | 287 (30.9) | 17 (3.7) | |
LLLT and finasteride | 50 (5.4) | 151 (33.2) | |
Family history with AGA | |||
No | 390 (42) | 178 (39.1) | 0.33 |
Yes | 538 (58) | 277 (60.9) | |
Marital status | |||
Single | 458 (49.4) | 202 (44.4) | 0.094 |
Married | 470 (50.6) | 253 (55.6) | |
Scalp conditions | |||
Oily scalp | |||
No | 148 (15.9) | 66 (14.5) | 0.537 |
Yes | 780 (84.1) | 389 (85.5) | |
Dandruff | |||
No | 672 (72.4) | 358 (78.7) | 0.014 |
Yes | 256 (27.6) | 97 (21.3) | |
Rash | |||
No | 719 (77.5) | 363 (79.8) | 0.365 |
Yes | 209 (22.5) | 92 (20.2) | |
Itchy scalp | |||
No | 577 (62.2) | 303 (66.6) | 0.122 |
Yes | 351 (37.8) | 152 (33.4) | |
Overall efficacy assessment | |||
No effective | 189 (20.4) | 103 (22.6) | 0.008 |
Moderately effective | 482 (51.9) | 261 (57.4) | |
Significantly effective | 257 (27.7) | 91 (20) |
Not effective | Moderately effective | Significantly effective | P value | |
---|---|---|---|---|
Total | 198 (21.8) | 510 (56.0) | 202 (22.2) | |
Age groups, years | ||||
18–30 | 87 (43.9) | 226 (44.3) | 84 (41.6) | 0.948 |
30, 40 | 80 (40.4) | 198 (38.8) | 87 (43.1) | |
40, 50 | 25 (12.6) | 73 (14.3) | 27 (13.4) | |
> 50 | 6 (3) | 13 (2.5) | 4 (2) | |
Gender | ||||
Female | 63 (31.8) | 181 (35.5) | 44 (21.8) | 0.002 |
Male | 135 (68.2) | 329 (64.5) | 158 (78.2) | |
Use period, times | ||||
Median (IQR) | 131.5 (89,206.8) | 144.5 (94,224) | 152 (96,241.8) | 0.068 |
Treatment regime | ||||
LLLT only | 139 (70.2) | 326 (64.2) | 132 (65) | 0.402 |
LLLT and minoxidil | 56 (28.3) | 162 (31.8) | 63 (31) | |
LLLT and finasteride | 3 (1.5) | 20 (3.9) | 9(3.9) | |
Family history with AGA | ||||
No | 88 (44.4) | 205 (40.2) | 78 (38.6) | 0.457 |
Yes | 110 (55.6) | 305 (59.8) | 124 (61.4) | |
Marital status | ||||
Single | 86 (43.4) | 228 (44.7) | 84 (41.6) | 0.747 |
Married | 112 (56.6) | 282 (55.3) | 118 (58.4) | |
Scalp conditions | ||||
Oily scalp | ||||
No | 37 (18.7) | 78 (15.3) | 29 (14.4) | 0.438 |
Yes | 161 (81.3) | 432 (84.7) | 173 (85.6) | |
Dandruff | ||||
No | 167 (84.3) | 403 (79) | 149 (73.8) | 0.034 |
Yes | 31 (15.7) | 107 (21) | 53 (26.2) | |
Rash | ||||
No | 168 (84.8) | 407 (79.8) | 143 (70.8) | 0.002 |
Yes | 30 (15.2) | 103 (20.2) | 59 (29.2) | |
Itch scalp | ||||
No | 150 (75.8) | 341 (66.9) | 111 (55) | < 0.001 |
Yes | 48 (24.2) | 169 (33.1) | 91 (45) |
Variables | Explanation of variables | Ordinal odds ratio (95% CI) | P value |
---|---|---|---|
Age, years | 18–30 | 1.00 (reference) | |
31–40 | 1.02 (0.74,1.42) | 0.45 | |
41–50 | 1.08 (0.69,1.69) | 0.37 | |
> 50 | 0.75 (0.32,1.76) | 0.25 | |
Gender | Female | 1.00 (reference) | 0.02 |
Male | 1.35 (1.01, 1.79) | ||
Marital status | Single | 1.00 (reference) | 0.18 |
Married | 1.16 (0.84,1.60) | ||
Family history with AGA | No | 1.00 (reference) | 0.26 |
Yes | 1.09 (0.84,1.41) | ||
Use period, times | < 90 (half year) | 1 (reference) | |
90–180 (half year to 1 year) | 1.20 (0.86,1.67) | 0.14 | |
180–360 (> 1 year) | 1.40 (1.11,1.96) | 0.03 | |
Treatment regime | LLLT only | 1.00 (reference) | |
LLLT and minoxidil | 1.17 (0.89, 1.54) | 0.14 | |
LLLT and finasteride | 1.08 (0.55, 2.12) | 0.42 | |
Scalp conditions | |||
Oily scalp | No | 1.00 (reference) | 0.32 |
Yes | 0.92 (0.64,1.32) | ||
Dandruff | No | 1.00 (reference) | 0.04 |
Yes | 1.34 (1.01,1.87) | ||
Rash | No | 1.00 (reference) | 0.01 |
Yes | 1.47 (1.04,2.07) | ||
Itchy scalp | No | 1.00 (reference) | 0.003 |
Yes | 1.51 (1.12,2.03) |