From: Maternal recall of breastfeeding duration twenty years after delivery
Breastfeeding duration | Recall error | |||||
---|---|---|---|---|---|---|
n | Recorded Median (IQR) | Recalled Median (IQR) | Underreporting > one month % (95%CI) | Overreporting > one month % (95%CI) | ICC | |
Maternal characteristics | ||||||
Age at delivery (yrs) | ||||||
<25 | 46 | 3.0 (5.8) | 4.0 (6.0) | 10.9 (3.6, 23.6) | 28.3 (16.0, 43.5) | 0.76 |
25-<30 | 184 | 6.0 (5.0) | 7.0 (5.0) | 6.0 (3.0, 10.4) | 29.4 (22.9, 36.5) | 0.81 |
≥30 | 115 | 7.0 (5.0) | 7.5 (5.0) | 11.3 (6.2, 18.9) | 24.4 (16.8, 33.2) | 0.85 |
Pre-pregnancy BMI (kg/m2)a | ||||||
<25 | 314 | 6.0 (6.0) | 7.0 (5.0) | 8.3 (5.5, 11.9) | 28.7 (23.7, 34.0) | 0.81 |
≥25 | 30 | 3.5 (6.6) | 4.5 (7.0) | 10.0 (2.1, 26.5) | 13.3 (3.8, 30.7) | 0.93 |
Educational level | ||||||
Primary school | 42 | 3.5 (6.3) | 5.0 (5.0) | 7.1 (1.5, 19.5) | 33.3 (19.6, 49.6) | 0.87 |
Secondary school | 187 | 6.0 (5.0) | 6.0 (5.0) | 8.6 (5.0, 13.5) | 28.3 (22.0, 35.4) | 0.78 |
College/university | 84 | 8.0 (4.0) | 9.0 (4.0) | 8.3 (3.4, 16.4) | 22.6 (14.2, 33.1) | 0.87 |
Missing information | 32 | 8.0 (3.0) | 8.5 (4.75) | 9.4 (2.0, 25.0) | 28.1 (13.8, 46.8) | 0.74 |
Smoking status | ||||||
Never | 90 | 8.0 (4.0) | 9.0 (4.0) | 8.9 (3.9, 16.8) | 24.4 (16.0, 34.6) | 0.82 |
Ever | 255 | 6.0 (5.5) | 6.0 (6.0) | 8.2 (5.2, 12.3) | 28.6 (23.2, 34.6) | 0.81 |
Child characteristics, index pregnancy | ||||||
Birth weight (g) | ||||||
<3500 | 177 | 7.0 (6.0) | 7.5 (5.0) | 9.6 (5.7, 14.9) | 28.8 (22.3, 36.1) | 0.82 |
≥3500 | 168 | 6.0 (5.0) | 7.0 (5.0) | 7.1 (3.8, 12.1) | 26.2 (19.7, 33.5) | 0.83 |
Preterm birth of child | ||||||
Yes | 11 | 8.0 (3.0) | 10.0 (5.0) | n.c.b | 4.5 (16.8, 76.6) | 0.71 |
No | 334 | 6.0 (6.0) | 7.0 (5.0) | 8.7 (5.9, 12.2) | 27.0 (22.3, 32.1) | 0.83 |
SGAc | ||||||
Yes | 56 | 7.0 (5.0) | 8.0 (5.5) | 5.4 (11.2, 14.9) | 39.3 (26.5, 53.3) | 0.82 |
No | 289 | 6.0 (6.0) | 7.0 (5.0) | 9.0 (6.0, 12.9) | 25.3 (20.4, 30.7) | 0.83 |
Gender, | ||||||
Male | 156 | 6.0 (5.9) | 7.5 (5.0) | 9.0 (5.0, 14.6) | 28.9 (21.9, 36.6) | 0.80 |
Female | 189 | 6.0 (5.0) | 6.0 (5.0) | 7.9 (4.5, 12.8) | 26.5 (20.3, 33.4) | 0.84 |
Birth order of index child, | ||||||
2nd birth | 269 | 6.0 (5.0) | 7.0 (5.0) | 7.8 (4.9, 11.7) | 28.3 (23.0, 34.0) | 0.82 |
3rd birth | 76 | 8.0 (6.5) | 8.0 (3.75) | 10.5 (4.7, 19.7) | 25.0 (15.8, 36.3) | 0.84 |
Age at introduction of cereals, monthsd | ||||||
< 4 | 96 | 4.0 (5.2) | 5.0 (4.9) | 10.4 (5.1, 18.3) | 32.3 (23.1, 42.6) | 0.78 |
≥4 | 236 | 7.0 (5.0) | 8.0 (3.0) | 7.2 (4.3, 11.3) | 26.3 (20.8, 32.4) | 0.82 |
Age at introduction of another kind of milk, monthse | ||||||
< 4 | 132 | 2.5 (2.9) | 3.0 (4.0) | 3.8 (1.2, 8.6) | 37.1 (28.9, 46.0) | 0.69 |
≥4 | 191 | 8.0 (3.0) | 8.0 (3.0) | 10.5 (6.5, 15.7) | 20.9 (15.4, 27.4) | 0.67 |