Table 2.
Overview of index, dimensions, and outcome measures at different times throughout the study.
| Measurement | Q1: first week after birth | Q2: six months after birth | Q3: one year after birth | Q4: two years after birth | ||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| n | M (SD) | MD | Range | α | n | M (SD) | MD | Range | α | n | M (SD) | MD | Range | α | n | M (SD) | MD | Range | α | |
| Enjoyment of breastfeeding | 278 | 5.6 (1.4) | 6.0 | 1.0–7.0 | 148 | 5.9 (1.2) | 6.0 | 1.0–7.0 | 26 | 6.1 (0.9) | 6.0 | 4.0–7.0 | 2.0 | 6.0 (0) | 6.0 | 6.0–6.0 | ||||
| MIRF-scale part one, item “Enjoyment of breastfeeding” included | 271 | 42.4 (4.4) | 43.0 | 25.0–49.0 | 0.62 | 187 | 40.6 (3.2) | 41.0 | 24.0–49.0 | 0.54 | 65 | 44.3 (4.4) | 45.0 | 29.0–49.0 | 0.57 | 47 | 42.2 (3.8) | 43.0 | 32.0–48.0 | 0.33 |
| MIRF-scale part one, item “Enjoyment of breastfeeding” not included | 284 | 36.8 (3.6) | 37.0 | 23.0–42.0 | 0.56 | 265 | 38.3 (3.4) | 39.0 | 20.0–42.0 | 0.52 | 240 | 38.7 (3.2) | 39.0 | 24.0–42.0 | 0.69 | 191 | 38.8 (3.0) | 39.0 | 25.0–42.0 | 0.44 |
| MIRF-scale part two | 277 | 44.7 (4.8) | 46.0 | 19.0–49.0 | 0.90 | 263 | 47.4 (3.0) | 49.0 | 32.0–49.0 | 0.91 | 240 | 47.7 (2.7) | 49.0 | 29.0–49.0 | 0.91 | 188 | 47.4 (2.9) | 49.0 | 23.0–49.0 | 0.88 |
| Mother's partner's perceived feelings for the child | 269 | 46.3 (3.4) | 48.0 | 32.0–49.0 | 0.85 | 260 | 46.2 (3.9) | 48.0 | 28.0–49.0 | 0.88 | 240 | 46.6 (4.5) | 49.0 | 15.0–49.0 | 0.92 | 188 | 46.9 (4.0) | 49.0 | 19.0–49.0 | 0.92 |
| SOC-13 | 276 | 71.0 (10.7) | 73.5 | 31.0–89.0 | 0.86 | 263 | 70.1 (12.2) | 71.0 | 27.0–90.0 | 0.89 | 239 | 70.9 (12.5) | 73.0 | 25.0–91.0 | 0.91 | 189 | 70.9 (12.0) | 74.0 | 38.0–90.0 | 0.91 |
| QDR36 | 214 | 25.4 (2.0) | 25.7 | 19.9–29.4 | 0.90 | 250 | 23.8 (2.7) | 24.1 | 13.4–29.2 | 0.93 | 229 | 23.7 (2.9) | 24.1 | 12.6–28.9 | 0.95 | 181 | 23.4 (3.1) | 23.7 | 11.3–29.3 | 0.95 |
Score range: Enjoyment of breastfeeding index: one dimension: range 1–7. MIRF-scale part one, item “Enjoyment of breastfeeding” included: Mother's perceived relation to the child index: theoretical range 7–49. MIRF-scale part one, item “Enjoyment of breastfeeding” not included: Mother's perceived relation to the child index: theoretical range 7–42. MIRF-scale part two: Mother's perceived feelings for the child index: theoretical range 7–49. Mother's partner's perceived feelings for the child index: theoretical range 7–49. SOC-13 index: theoretical range 13–91; dimensions: comprehensibility range 5–35; manageability range 4–28, meaningfulness range 4–28. QDR36 index: theoretical range 5–30; dimensions: range 1–6. Values: n = number of participants, M = mean; SD = standard deviation; MD = median; α = Cronbach's alpha.