Table 4.

IRR of BCC, CMM, MCC, and SCC per additional five treatments with specific photosensitizing medications for ST use, among users of such medications

Medications for ST useIRR (95% CI)*
BCCCMMMCCSCC
Any ST medication use1.11 (1.08-1.13)1.06 (1.01-1.12)0.93 (0.47-1.82)1.16 (1.11-1.22)
Antimicrobials
    Acyclovir1.1 (1.0-1.1)1.1 (0.9-1.2)0.8 (0.03-27)1.1 (1.0-1.3)
    Ciprofloxacin1.2 (1.1-1.2)0.8 (0.6-1.1)0.01 (0.0-22)1.1 (0.9-1.3)
    Doxycycline1.0 (0.9-1.2)1.2 (0.9-1.6)1.2 (0.1-19)1.3 (1.0-1.7)
    Ketoconazole1.1 (1.0-1.1)1.1 (1.0-1.2)0.7 (0.1-3.2)1.0 (0.9-1.1)
    Levofloxacin1.7 (0.7-3.9)1.5 (0.03-84)1.5 (0.1-29)
    Sulfamethazole with trimethoprim1.3 (1.1-1.5)0.7 (0.3-1.5)1.7 (1.5-1.9)
    Tetracycline1.1 (1.0-1.2)1.0 (0.8-1.2)1.0 (0.9-1.2)
Antimalarials
    Hydroxychloroquine1.0 (1.0-1.1)1.2 (1.0-1.4)1.1 (0.9-1.4)
SDA
    Acitretin0.9 (0.7-1.2)0.9 (0.5-1.5)1.5 (0.9-2.5)1.2 (1.0-1.4)
    Isotretinoin1.2 (0.9-1.5)0.7 (0.4-1.5)1.4 (1.0-2.1)
  • *Adjusted for age, period, sex, and education.