Maternal infant feeding intentions while pregnant and in the postpartum period
| Overall | SLE | UCTD | Arthritis | Rare rheumatic diseases | P value | |
| Number of pregnancies | 265 | 88 | 33 | 100 | 44 | |
| Breastfeeding intention at cohort entry | 265 | 88 | 33 | 100 | 44 | 0.02 |
| Breast feeding only, n (%) | 134 (51) | 34 (39) | 24 (73)* | 54 (54)† | 22 (50) | |
| Breast feeding+formula, n (%) | 75 (28) | 24 (27) | 5 (15) | 32 (32) | 14 (32) | |
| Don’t know, n (%) | 22 (8) | 12 (14%) | 1 (3)* | 5 (5)† | 4 (9) | 0.006‡ |
| Formula only, n (%) | 34 (13) | 18 (20) | 3 (9) | 9 (9) | 4 (9) | |
| Ever breastfed postpartum (n=263)§, n (%) | 222 (84) | 69 (78) | 30 (91) | 86 (88) | 37 (84) | 0.3 |
| Breastfeeding status at postpartum visit§ | 264 | 88 | 33 | 99 | 44 | 0.01 |
| Breast feeding only, n (%) | 109 (41) | 26 (30) | 15 (45) | 53 (54) | 15 (34) | |
| Breast feeding+formula, n (%) | 63 (24) | 24 (27) | 11 (33) | 16 (16) | 12 (27) | |
| Formula only, n (%) | 92 (35) | 38 (43) | 7 (21)* | 30 (30) | 17 (39) | 0.09¶ |
*Indicates p value <0.05 for UCTD compared with SLE.
†Indicates p value <0.05 for arthritis compared with SLE.
‡P values compare plan to breastfeed/breastfeed+formula versus formula only/don’t know.
§Excludes one participant who used donor milk.
¶P values in this row compare breast feeding/breast feeding+formula versus formula only.
UCTD, undifferentiated connective tissue disease.