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. 2013 Aug 6;70(3):587–598. doi: 10.1111/jan.12219

Table 4. Breastfeeding and personality traits: Showing mean personality scores (and standard deviation) at specific time points postpartum.

Time postpartum Any Breastfeeding N Extraversion Emotional Stability Openness Conscientiousness Agreeableness
Birth Yes 501 8·45 (2·44)** 7·56 (2·63)** 6·88 (2·58) 8·51 (2·32)* 9·12 (2·16)
No 101 7·33 (2·49)** 6·79 (2·40)** 6·33 (2·56) 8·78 (2·34)* 8·78 (2·16)
Two weeks Yes 320 8·41 (2·42)** 7·50 (2·63)** 6·94 (2·57) 8·42 (2·47) 8·75 (2·47)
No 228 7·39 (2·50)** 7·01 (2·56)** 6·62 (2·59) 8·70 (2·14) 8·93 (2·03)
Six weeks Yes 229 8·55 (2·29)* 7·79 (2·54)** 7·00 (2·61) 8·74 (2·45) 8·91 (2·23)
No 373 7·77 (2·54)* 7·03 (2·62)** 6·66 (2·57) 8·44 (2·24) 8·79 (2·12)
Twelve weeks Yes 169 8·03 (2·08) 7·69 (2·77)* 6·66 (2·51) 8·68 (2·47) 9·01 (2·15)
No 433 8·25 (2·60) 6·88 (2·08)* 6·84 (2·61) 8·56 (2·26) 8·86 (2·16)
Twenty six weeks Yes 155 8·25 (1·99) 7·51 (2·78)* 6·69 (2·53) 8·77 (2·46) 9·01 (2·18)
No 447 8·00 (2·61) 6·87 (1·93)* 6·82 (2·60) 8·54 (2·26) 8·87 (2·15)

Shaded areas represent significant difference in personality trait between feeding groups as per MANCOVA test. *P < 0·001; **P < 0·05.