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. 2021 Apr 29;13(5):1511. doi: 10.3390/nu13051511

Table 4.

Study year, type of phototherapy of used, number of patients treated, baseline and post treatment mean serum 25(OH)D concentrations, and baseline and posttreatment range at of serum 25(OH)D concentrations in the phototherapy clinical trials reviewed.

Baseline Post-Tx Baseline Post-Tx
Study 25(OH)D 25(OH)D 25(OH)D 25(OH)D
Year Group N Mean Mean Range ** Range **
1996 UVB + Placebo 7 37.9 96.1 20 to 80 45 to 159
UVB + Calcitirol 6 27.3 67.1 15 to 40 45 to 123
2010 UVB 29 23 * 51 * 9 to 46 32 to 112
No UVB 29 12 * 13 * 7 to 42 7 to 33
2009 BB-UVB 26 38 ± 17 69 ± 20 17 to 82 45 to 118
NB-UVB 42 35 ± 12 55 ± 18 15 to 73 28 to 98
2010 BB-UVB 24 37 ± 17 60 ± 19 18 to 88 25 to 90
Sunshine 20 23 ± 6 42 ± 6 18 to 42 30 to 60
Total 183

Note: N = number of patients, * = median, ** = range estimated from figure in manuscript.