Interview participants
| Age group of participants’ child consuming CMF | ||||
| Less than 6 months (n=8) | 6–11 months (n=9) | 12–35 months (n=8) | Total (n=25) | |
| Age of participant in years, mean (SD) | 29.6 (5.1) | 29.4 (3.5) | 30.7 (6.9) | 29.9 (5.1) |
| Number of children, n (%) | ||||
| One | 5 (63) | 6 (67) | 6 (75) | 17 (68) |
| Two | 1 (13) | 3 (33) | 1 (13) | 5 (20) |
| Three or more | 2 (25) | 0 | 1 (13) | 3 (12) |
| SES, n (%)21 | ||||
| Low | 2 (25) | 4 (44) | 3 (38) | 9 (36) |
| Medium | 3 (38) | 3 (33) | 2 (25) | 8 (32) |
| High | 3 (38) | 2 (22) | 3 (38) | 8 (32) |
| Annual household income below £30 000, n (%) | 2 (25) | 3 (33) | 3 (38) | 8 (32) |
| Highest level of education, n (%) | ||||
| GCSE or equivalent | 3 (38) | 4 (44) | 1 (13) | 8 (32) |
| A-level or equivalent | 0 | 3 (33) | 1 (13) | 4 (17) |
| Degree or higher | 5 (63) | 2 (20) | 6 (75) | 13 (52) |
| Location, n (%) | ||||
| England | 6 (75) | 6 (67) | 3 (38) | 15 (60) |
| Scotland | 2 (25) | 2 (22) | 4 (50) | 8 (32) |
| Wales | 0 | 1 (11) | 1 (13) | 2 (8) |
| Ethnicity | ||||
| White | 6 (75) | 8 (89) | 4 (50) | 18 (72) |
| Black Caribbean | 1 (13) | 0 | 0 | 1 (4) |
| Asian | 0 | 1 (11) | 2 (25) | 3 (12) |
| Mixed white/black Caribbean | 0 | 0 | 2 (25) | 2 (8) |
| Mixed white/not listed | 1 (13) | 0 | 0 | 1 (4) |
| Single parent, n (%) | 2 (25) | 2 (22) | 2 (25) | 6 (24) |
| Mixed CMF and breast feeding, n (%) | 2 (25) | 3 (33) | 2 (25) | 7 (28) |
| Age of infant in months, mean (SD) | 2.5 (1.6) | 8.2 (1.0) | 20.6 (6.3) | 10.4 (8.4) |
| Female infant, n (%) | 6 (75) | 4 (44) | 4 (50) | 14 (56) |
CMF, commercial milk formula; GCSE, General Certificate of Secondary Education; SES, socioeconomic status based on composite score.