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. 2024 Aug 3;8(Suppl 2):e002539. doi: 10.1136/bmjpo-2024-002539

Table 1. Key characteristics of questionnaire used for data collection.

Outcome Questionnaire Number of domains and questions Recall period Score range Cut-offs recommended in literature
Stress Parental Stressor Scale for NICU (PSS:NICU) 26 questions in three domains
  • Sights and Sounds (6 items)

  • Infant Behaviour and Appearance (13 items)

  • Parental Role Alteration (7 items).

  • A final question about overall stress during NICU hospitalisation.

Not specified 1–5 for each question(total: 1–5) No recommendation in literature
Depression Edinburgh Postnatal Depression Scale (EPDS) 10 questions Last 7 days 0–3 for each question(total: 0–30) For diagnosis of depression:≥ 12 Italy≥ 13 Brazil and Tanzania22,33
Anxiety EPDS-Anxiety subscale (EPDS-A) 3 questions Last 7 days 0 to 3 for each question(total: 0–9) For diagnosis of anxiety:≥ 634
State anxiety State Anxiety Inventory (STAI Y1) 20 questions In the last 24/48 hour 1–4 for each question(total 20–80) For diagnosis of anxiety: >40Anxiety level41–50: mild anxiety51–60: moderate anxiety>60: severe anxiety35,46
Traitanxiety Trait Anxiety Inventory (STAI Y2) 20 questions Not specified (describe how you generally feel) 1–4 for each question(total 20–80) For diagnosis of anxiety: >40Anxiety level41–50: mild anxiety51–60: moderate anxiety>60: severe anxiety35,46
Participation to care Index of Parental Participation (IPP-NICU) 30 questions in four domains
  • Daily Living (6 items)

  • Providing Comfort (7 items)

  • Advocating for Newborn Health (7 items);

  • Technical Tasks (10 items).

Previous 24 hours 0–1 (yes or no) for each question(total 0–30, different maximum scores for each subdomain) No recommendation in literature