Table 1:

Currently available identification tools for EUGR

Criteria	Mild EUGR	Moderate EUGR	Severe EUGR	When to apply?
1. Weight-for-age Z-scoresa	Decline of 0.8–1.2 SD	Decline of >1.2–2 SD	Decline >2 SD	Not appropriate for first 2 weeks of life
2. Weight gain velocityb	<75% of expected weight gain for that particular age	<50% of expected weight gain for that particular age	<25% of expected weight gain for that particular age	Not appropriate for first 2 weeks of life
3. ≥2 of the following				Not appropriate for first 2 weeks, can be used subsequently in conjunction with other parameters if accurate length measurement is available.
•Length-for-age Z-scoresa	Decline of 0.8–1.2 SD	Decline of >1.2–2 SD	Decline >2 SD
•Length gain velocityb	<75% of expected length gain for that particular age 15–18 days	<50% of expected length gain for that particular age 19–21 days	<25% of expected length gain for that particular age
•Days to regain birth weight (in conjugation with nutrient intake)	(>3–5 consecutive days of <75% intakes of estimated protein/calorie)	(>5–7 consecutive days of <75% intakes of estimated protein/calorie)	>21 days (>7 consecutive days of <75% intakes of estimated protein/calorie)	Preferred for first 2 weeks of life

^aExpected Z-score for weight for age and length for age.

^bWeight gain velocity and linear growth velocity were estimated using online calculator (www.peditools.org). In this calculator, weight gain velocity is estimated by using the World Health Organization (WHO) methods; weight increments are classified by birth-weight category presented in 1-week and 2-weeks intervals from birth to 60 days.²¹