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Table 4 Personal UVR dose (MED), time outdoors and use of sun protection, Chinese Families and Children Study, 2012

From: Personal ultraviolet Radiation exposure in a cohort of Chinese mother and child pairs: the Chinese families and children study

  Urban Rural
Mothers Adolescents Mothers Adolescents
Male Female Male Female
Average daily personal UVR dose (MED)a (range) 0.78 (0.06, 2.43) 0.48 (0.06, 1.15) 0.81 (0.002, 2.87) 4.53 (0.54, 12.58) 2.16 (0.16, 8.17) 1.05 (0.03, 4.69)
Personal fraction %b 3.80% 2.34% 3.95% 22.38% 10.67% 5.19%
Average self-reported duration per day outdoors (minutes)c (range) 81.1 (7.5, 315.2) 98.3 (7.5, 682.5) 72.9 (2.5, 158.7) 334.4 (30.0, 639.8) 147.9 (52.0, 612.5) 94.6 (30.0, 270.7)
Use of sun protectiond:
 Sunscreen 10 0 0 7 1 5
 Hatse 12 0 2 11 0 0
 Gloves 10 0 0 6 1 0
 Umbrella 5 0 0 0 0 0
  1. aMinimal Erythemal Dose (MED)
  2. bEstimated as the ratio between the average values of daily personal UVR dose divided by the average values of ambient UVR
  3. cAverage value of the group that completed 3 days of the sun diary
  4. dIncludes the use of any of the listed items during the 3-day study period
  5. eHead partially or completely covered