Table 5.
App demography in comparison: apps within the “Medical” category versus those for which a German-language store description was provided versus those having a cardiology reference.
| App demographics | All apps assigned to the “Medical” category (N=39,427) | Apps assigned to the “Medical” category that also have a German-language store description (N=5045) | Apps selected via the cardiology keywords (N=335) | |
| Overall age of the apps in months, median (IQRa) | 28.22 (34.89) | 32.58 (33.35) | 39.25 (48.39) | |
| Age in months (current version only), median (IQR) | 12.98 (22.32) | 11.07 (22.51) | 7.73 (20.20) | |
| File size in megabytes, median (IQR) | 22.56 (36.08) | 24.65 (30.37) | 30.25 (53.58) | |
| Price in Euros (€) | ||||
|
|
Number of paid apps and percentage of total, n (%) | 6838 (17.34) | 846 (16.77) | 91 (27.2) |
|
|
Price, median (IQR) | 3.99 (7.70) | 3.49 (3.20) | 3.49 (4.70) |
|
|
Price range (€) | 0.49-1099.99 | 0.49-499.99 | 0.49-249.99 |
| Length of the store description (number of characters), median (IQR) | 757 (1048.50) | 921 (1502.00) | 1630 (1585.50) | |
| Star ratings (current version) | ||||
|
|
Rated apps, n (%) | 2072 (5.26) | 1408 (27.91) | 144 (43.0) |
|
|
Median rating (IQR) | 4.50 (2.00) | 4.50 (2.00) | 4.50 (2.00) |
|
|
Maximum number of ratings (n) | 6900 | 6900 | 645 |
|
|
Number of ratings, median (IQR) | 2.00 (3.00) | 2.00 (5.00) | 3.00 (8.00) |
| Overall star ratings (all versions) | ||||
|
|
Rated apps, n (%) | 2581 (6.55) | 1681 (33.32) | 173 (51.6) |
|
|
Median rating (IQR) | 4.00 (2.00) | 4.00 (2.00) | 4.00 (1.50) |
|
|
Maximum number of ratings (n) | 22,153 | 22,153 | 6881 |
|
|
Number of ratings, median (IQR) | 6.00 (18.00) | 7.00 (22.00) | 14.00 (49.00) |
aIQR: interquartile range.