Table 2 Algorithm for Estimation of SE Score for Individuals
Variable/item | Percentage given | Explanation |
|---|---|---|
Part of the body exposed (clothing) | 1 if exposed | 1 = 100% UVB can penetrate. |
0 if not exposed/covered | ||
0.5 if partially covered | ||
Application of sunscreen/cosmetics on different parts of body (SPF) | 1 if no use of any products | 1 = 100% UVB |
0.08 if sunscreen and SPF 15 and above | 0.08 = 8% UVB penetrates i.e. blocks 92% | |
0.9 if use of other creams and lotions without knowledge of SPF | 0.9 = 90% UVB absorption | |
Sun protection practices | 1 if no protection practices | 1 = 100% UVB absorption |
0.4 if used shade of tree/building etc. | 0.4 = 40% UVB available for absorption | |
Weather outdoors | 1 if sunny | 1 = 100% UVB on a sunny day |
0.5 if cloudy | 0.5 = 50% UVB on a cloudy day | |
0.75 if sunny/cloudy | 0.75 = 75% UVB if light clouds and sunny | |
Glass windows of car/bus/van | 0.1 if glass windows up | 0.1 = 10% UVB absorption through glass windows, 90% blocked |
0.4 if windows down | 0.4 = 40% UVB available for absorption into skin | |
Skin tone | Type 1 - 0.8 | 80% UVB penetration |
Type II - 0.675 | 67.5% UVB penetration | |
Type III - 0.55 | 55% UVB penetration | |
Type IV - 0.425 | 42.5% UVB penetration | |
Type V - 0.3 | 30% UVB penetration by skin |