Table 6. Breastfeeding at 6–8 weeks (n = 38725).

Exposures	Exposed n [%]	Unexposed [n [%]	Unadjusted OR [95% CI]	Adjusted* OR [95% CI]	NNH	Interaction term with depression variable
SSRI [any N06AB] in trimesters 2 or 3	137/645 [21.24]	12,656/38,080 [33.24]	0.54 [0.45–0.66]	0.77 [0.62–0.95]	9 [7–12]	1.11(0.72–1.70)
SSRI high dose in trimesters 2 or 3	47/214 [21.96]	12,746/38,511 [33.1]	0.57 [0.41–0.79]	0.45 [0.23–0.86]	9 [6–18]	2.49[11.13–5.52]
Antidepressant [any N06A] in trimesters 2 or 3	179/806 [22.21]	12,614/37,919 [33.27]	0.57 [0.48–0.68]	0.81 [0.67–0.98]	10 [8–13]	1.25[0.86–1.83]
SSRI in trimester 1 but not in trimesters 2 or 3	207/862 [24.02]	12,586/37,863 [33.24]	0.64 [0.54–0.74]	0.66 [0.51–0.87]	11 [9–16]	1.59[1.10–2.30]
Antidepressant in trimester 1 but not in trimesters 2 or 3	376/1619 [23.22]	12,417/37,106 [33.46]	0.60 [0.54–0.68]	0.70 [0.57–0.85]	10 [9–13]	1.37[1.04–1.80]
Depression diagnosed and unmedicated in t2 and t3	1365/5241 [25.87]	11,428/33,484 [34.13]	0.68 [0.67–0.73]	0.87 [0.82–0.92]	13 [11–15]	Na
Depression medicated in t2 or t3	102/472 [21.62]	12,691/38,253 [33.18]	0.56 [0.45–0.69]	0.70 [0.58–0.85]	9 [7–13]	Na
Depression diagnosed	1467/5713 [25.7]	11,346/33,012 [34.31]	0.66 [0.62–0.71]	0.76 [0.70–0.82]	12 [11–14]	Na

Exclusions, definitions and abbreviations as in Table 2

*Adjusted for SES, as Townsend fifth, parity, smoking and year of birth.