Research Article
Working towards Usable Forms on the World  Wide Web: Optimizing Date Entry Input Fields
Table 1
Statistic parameters for number of errors: entries in a wrong format and wrong date.
| | 
 |  | Version | Wrong format | Wrong date |  | M (%) | SD | M (%) | SD |  | 
 |  | Version 1 (separate) | 18.5 | 30.5 | 3.0 | 8.1 |  | Version 2 (drop-down) | 0 | 0 | 2.1 | 7.6 |  | Version 3 (left) | 22.3 | 33.5 | 1.6 | 5.6 |  | Version 4 (inside, permanent) | 22.3 | 32.8 | 1.7 | 5.7 |  | Version 5 (inside) | 25.7 | 32.5 | 1.9 | 7.5 |  | Version 6 (calendar) | 0 | 0 | 18.3 | 29.7 |  | 
 | 
 |