Interviewee demographics
| Interviewee | Age | Smoked in previous pregnancies | Pre-pregnancy smoking amount (cigarettes per day) | Current smoking amount (cigarettes per day) | Recruitment method |
| 1 | 21 | No | 5 | 2 | |
| 2 | 35 | No | 8 | 3 | |
| 3 | 32 | Yes | 15 | 2 | |
| 4 | 34 | No | 10 | 1 | |
| 5 | 24 | Yes | 20 | 15 | |
| 6 | 31 | N/A | 20–30 | 5–10 | |
| 7 | 25 | No | 50 | 20 | |
| 8 | 25 | N/A | 8 | 6 | |
| 9 | 32 | Yes | 12 | 4 | |
| 10 | 25 | Yes | 6 | 1 | |
| 11 | 24 | Yes | 5–10 | 1–3 | Social media (Reddit) |
| 12 | 35 | Yes | 12 | 8 | Other study |
| 13 | 37 | No | 12 | 0 | Other study |
| 14 | 25 | No | 10 | 0 | Other Study |
| 15 | 38 | No | 20 | Less than 1 | Other Study |
| 16 | 32 | No | 25 | 0 | Social media (Reddit) |
| 17 | 31 | Yes | 25 | 6 | Other study |
| 18 | 30 | Yes | 25 | 10 | Other study |