| A follow-up study in Washington found that the wage gap had shrunk significantly. |
| The follow-up question was contingent upon the answer to the first question. |
| A follow-up study found that exposure was highly variable and workers may have modified their exposure as a consequence of being studied. |
| The deleted scenes include more case studies and a follow-up with campaigners. |
| Ethics review was granted separately for the follow-up employee study, as this was an add-on to the original research project. |
| The follow-up length of this study is, of course, too short to answer the question of long-term stability. |
