Table 4.

Age in years at diagnosis or at last disease activity requiring contact with the physician

	Distribution of Estimates by Source		Difference Between Physician Estimate from Survey and Database
	Mean	95% CI	Mean	95% CI
Age at diagnosis (n = 160)
Physician survey	17.9	14.3–21.4	N/A	N/A
Database
First diagnosis code1	17.1	13.5–20.6	0.8	– 0.3 to 1.9
First prescription for any eczema treatment2	17.4	13.9–21.0	0.4	– 0.8 to 1.7
If no symptoms in the year before the last visit date, age at last disease activity (n = 53)
Physician survey	20.7	14.3–27.2	N/A	N/A
Database
Last diagnosis code1	22.0	15.6–28.5	–1.3	– 2.5 to –0.1
Last prescription for any eczema treatment2	24.6	14.3–27.2	–3.9	– 5.3 to –2.4

Abbreviations: CI, confidence interval; N/A, not applicable.

¹Any of the five most commonly used codes (atopic dermatitis/eczema M111.00, infantile eczema M112.00, flexural eczema M113.00, allergic/intrinsic eczema M114.00, or eczema not otherwise specified M12z100).

²See Supplementary Table S2.