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