“…Factors include experiencing severe pain [8,9], excessive stress [8], being injured [10][11][12][13], receiving an obstetric intervention [14,15], perceptions of inadequate medical care [16], long labour [17], personality characteristics [18,19], being knowledgeable about birth [20,21], self-efficacy [22,23], ability to cope with adversity [18], feeling in control [24][25][26][27], level of choice provided [23,28,29], feeling empowered [20,30], labouring in a comfortable environment [31,32], continuous support throughout labour [24,33,34], quality relationships with care providers [10,31,34] and delivery of a healthy infant [11,31].…”