| Name | Lines of code | Maintainability | Test coverage |
| react/src/components/QuestionItemForm.js | 252 | D 2 days | |
| app/models/instrument.rb | 256 | C 1 day | |
| react/src/components/CodeListForm.js | 272 | D 2 days | |
| react/src/components/Dashboard.js | 287 | D 2 days | |
| lib/importers/xml/ddi/instrument.rb | 290 | F 3 days | |
| react/src/components/QuestionGridForm.js | 347 | D 2 days | |
| react/src/components/Home/index.js | 377 | F 6 days | |
| react/src/reducers/index.js | 447 | F 2 wks | |
| react/src/pages/InstrumentConstructBuild.js | 494 | F 1 wk | |
| react/src/pages/InstrumentView.js | 524 | F 1 wk | |
| react/src/pages/DatasetView.js | 537 | F 1 wk | |
| react/src/pages/InstrumentMap.js | 707 | F 3 wks | |
| react/src/actions/index.js | 1,980 | F 1 mo |