ArticleCureus2026
Temporal Trends in the Impact of Preterm Birth on Low Birthweight Rates in Greece.
Article in Cureus, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
BACKGROUND AND
objectivesIn Greece, both the preterm birth rate (PBR) and the low birthweight rate (LBWR) have risen sharply in recent decades, reaching among the highest levels in high-income countries and posing a substantial public health concern. This study aimed to quantify the contribution of preterm births to the national LBW burden and to determine the extent to which the rise in PBR has driven the increase in LBWR.
methodsThe analysis included 4,585,090 live births recorded in Greece from 1980 to 2023, stratified by gestational age and birthweight. Temporal trends were assessed using joinpoint regression analysis. For each segment between two joinpoints, the annual percent change (APC) was calculated with 95% confidence intervals (CIs), and statistical significance was set at p < 0.05.
resultsFrom 1980 to 2023, both LBWR and PBR increased substantially and were strongly correlated (rho = 0.858, 95% CI: 0.725-0.929, p < 0.001). The preterm LBWR remained stable from 1987 to 2004, then rose significantly thereafter (APC = 0.5, 95% CI: 0.2-0.9, p = 0.027). In contrast, the term LBWR increased during the 1980s and 1990s, declined significantly from 2002 to 2017 (APC = -3.5, 95% CI: -6.2 to -2.7, p = 0.033), and then stabilized. The population attributable risk (PAR, %) of LBW due to prematurity increased from a low of 25.8% in 1991 to a historic peak of 68.2% in 2021 (67.1% in 2023), with statistically significant rises during 1991-2004 (APC = 2.5, 95% CI: 1.3-7.7, p = 0.024), 2004-2009 (APC = 9.1, 95% CI: 2.4-13.9, p = 0.021), and 2009-2023 (APC = 1.4, 95% CI: 0.7-2.0, p = 0.014). The proportion of LBW neonates born preterm rose from a minimum of 27.8% in 1991 to a peak of 72.0% in 2021 (71.2% in 2023). The entire increase in LBWR between 1991 and 2023 was fully explained by the concurrent rise in PBR.
conclusionsThis nationwide study demonstrates that preterm birth is the principal driver of Greece's high LBWR. The population risk of LBW attributable to prematurity has increased markedly over the past three decades, and the sustained rise in LBWR is entirely accounted for by the parallel increase in PBR. These findings underscore the urgent need for targeted, evidence-based clinical and public health strategies to reduce prematurity and improve perinatal outcomes.
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