. 2021 Jul 30;9(7):e26149. doi: 10.2196/26149

Table 1.

Metadata for the patient randomization, dropouts, and number of images from each group.

Patient characteristics			Intervention period (Weeks 1-8)				Week 9					Dropouts (n=6)
			Feedback (n=8)		Basic (n=7)		Feedback (n=4)		Basic (n=4)
Age (years), mean (SD)			47 (11)		52 (9)		N/A^a		N/A		48 (13)
Sex, n
	Male	4		1		N/A		N/A		0
	Female	4		6		N/A		N/A		6
Strata ratio^b, n
	Not familiar	0		0		N/A		N/A		3
	Familiar	8		7		N/A		N/A		3
Total number of images			199		183		15		9		N/A
Distribution of images per patient, mean (SD)			24.88 (11.21)		26.14 (10.59)		1.88 (1.76)		1.29 (1.39)		N/A
Number of images with color checker detected			191		158		N/A		N/A		N/A
Subjective quality^c, n			180		155		15		7		N/A

^aN/A: not applicable.

^bRatio of the number of patients that were not familiar to those who were familiar with smartphone camera usage.

^cNumber of images manually labeled as good quality by the research assistant.