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Table 5 Comparison of demographic data and circulating apelin changes between obese children and non-obese children

From: Relationships of apelin concentration and APLN T-1860C polymorphism with obesity in Thai children

  Ethnicity Sample size (obese/ non-obese) Age Sources and types of apelin measurement Levels of apelin
The present study Thai children 198/127 10.5/10.1 Apelin-12 in plasma *
Kotanidou et al. [7], Greek children and adolescents 90/90 11.6/11.7 Apelin-12 in serum *
Greek children 45/45 9.3/8.4  *
Greek adolescents 45/45 13.1/15.2  a
Reinehr et al. [17], German children 80/40 10.9/11.6 Apelin in serum b
Tapan et al. [8], Turkish children 32/40 11.0/12.0 Apelin-12 in serum *
Pubertal children 16/21 13.2/13.2  *
Pre-pubertal children 16/19 8.8/8.7  
El Wakeel et al. [5], Egyptian children 50/31 9.5/8.7 Apelin in serum *
Ziora et al. [18], Polish girls 30/61 14.6/15.4 Apelin-12 & Apelin-36 in serum *
Ba et al. [6], Chinese girls 20/16 9.7/10.9 Apelin-12 in serum *
Chinese boys 28/24 10.9/10.9  
  1. Significance level: * P < 0.050
  2. aP = 0.051, b P = 0.061