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Table 3 Associations between Mutually-Adjusted Trimester-specific Ta, tLBW and SGA in Singleton Term Infants, Southern Israel, 2004–2013

From: Associations between ambient air temperature, low birth weight and small for gestational age in term neonates in southern Israel

Outcome Ta Exposure Category 1st trimester 2nd trimester 3rd trimester
tLBW Lowest quartilea 0.92 (0.75–1.13) 0.94 (0.74–1.18) 1.17 (0.92–1.49)
Intermediate quartiles Reference Reference Reference
Highest quartilea 1.03 (0.82–1.31) 1.14 (0.92–1.41) 1.02 (0.92–1.12)
SGA Lowest quartilea 1.02 (0.92–1.12) 0.95 (0.85–1.06) 1.17 (1.05–1.31)
Intermediate quartiles Reference Reference Reference
Highest quartilea 0.82 (0.73–0.92) 0.94 (0.85–1.04) 0.95 (0.85–1.05)
  1. aExposure quartiles were calculated for each trimester separately. 1st trimester: lowest: < 14.9, Highest: > 24.1. 2nd and 3rd trimesters: lowest: < 15.6, Highest: > 24.7. (All values are in centigrade)
  2. Ta Average ambient air temperature, tLBW term low birth weight, SGA small for gestational age. Trimester-specific exposures were adjusted for calendar month, year of birth, particulate matter < 2.5 μm (PM2.5), maternal age at birth, gravidity, parity, ethnicity, newborn sex, census-level poverty index and population density, and mutually adjusted for each other