Table 4.
Overview of instrument content validity
| Instrument name | Number of items | Acceptable respondent burden | Clarity of instructions | Clarity of item wording | Appropriate and balanced response options | Appropriate recall period |
|---|---|---|---|---|---|---|
| FertiQoL | 36 | ✓ | ✓ | ✓ | ✓ | X |
| FPI | 46 | ✓ | ✓ | X | X | X |
| FPS | 14 | ✓ | ✓ | ✓ | ✓ | X |
| ICQ-I | 12 | ✓ | n/av | X | X | n/av |
| IFQ | 21 | ✓ | ✓ | X | ✓ | X |
FertiQoL Fertility Quality of Life Questionnaire, FPI Fertility Problem Inventory, FPS Fertility Problem Stress, ICQ-I, Infertility Cognitions Questionnaire adapted for Infertility, IFQ Infertility Questionnaire, n/av not available