Table 2.

Keywords for each search term

PICO reference	Term	Keywords
P	Breastfeeding	Breastfe*, breast fe*, lactat* and infant feeding
	BMI ≥30 kg m−2	Obes*, body mass index, bmi, body mass index 30, bmi 30 and overweight
O	Psychological factors	psychosocial factors, psychological, social, social norms, social support, psychosocial support, self‐efficacy, expectations, education, health education, well being, wellbeing, psychological well‐being, body image, confidence, self‐confidence, knowledge, health knowledge, motivation, views, self‐esteem, self‐perception, attitudes, beliefs, postpartum depression, anxiety, stress, psychological stress, social acceptance and social influence

^* Represents truncation.

BMI, body mass index.