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Table 2 Crude and age-standardized prevalence of metabolic syndrome among the study participants stratified by sex in Shaanxi province, northwestern China

From: Urban, semi-urban and rural difference in the prevalence of metabolic syndrome in Shaanxi province, northwestern China: a population-based survey

Age group Urban Semi-urban Rural
year n/N % ± SD n/N % ± SD Pvalue n/N % ± SD Pvalue
All         
   20-30 21/267 7.9 ± 3.3 14/143 9.8 ± 4.9   7/148 4.7 ± 3.5  
   30-40 68/374 18.2 ± 3.9 43/228 18.9 ± 5.2   47/205 22.9 ± 5.8  
   40-50 101/343 29.4 ± 4.8 55/214 25.7 ± 5.9   66/199 33.2 ± 6.6  
   50-60 93/228 40.8 ± 6.4 82/174 47.1 ± 7.5   112/221 50.7 ± 6.6  
   ≥ 60 130/255 51.0 ± 6.2 36/80 45.0 ± 11.1   63/117 53.8 ± 9.2  
   Crude 413/1467 28.2 ± 2.4 230/839 27.4 ± 3.0   295/890 33.1 ± 3.1  
   Standardized*   25.9 ± 2.1   24.2 ± 2.4 0.693   29.0 ± 2.7 0.017
Male         
   20-30 18/112 16.1 ± 6.9 8/61 13.1 ± 8.7   3/61 4.9 ± 5.6  
   30-40 47/172 27.3 ± 6.7 28/86 32.6 ± 10.1   23/85 27.1 ± 9.6  
   40-50 35/127 27.6 ± 7.8 26/86 30.2 ± 9.9   22/83 26.5 ± 9.7  
   50-60 35/94 37.2 ± 9.9 22/64 34.4 ± 12.0   38/96 39.6 ± 10.0  
   ≥ 60 46/120 38.3 ± 8.8 15/38 39.5 ± 6.3   27/50 54.0 ± 14.3  
   Crude 181/625 29.0 ± 3.6 99/335 29.6 ± 5.0   113/375 30.1 ± 4.6  
   Standardized*   27.6 ± 3.5   26.9 ± 3.7 0.643   27.2 ± 4.2 0.784
Female         
   20-30 3/155 1.9 ± 2.2 6/82 7.3 ± 5.8   4/87 4.6 ± 4.5  
   30-40 21/202 10.4 ± 4.2 15/142 10.6 ± 5.1   24/120 20.0 ± 7.3  
   40-50 66/216 30.6 ± 6.1 29/128 22.7 ± 7.3   44/116 37.9 ± 9.0  
   50-60 58/134 43.3 ± 8.5 60/110 54.5 ± 9.5   74/125 59.2 ± 8.7  
   ≥ 60 84/135 62.2 ± 8.3 21/42 50.0 ± 15.8   36/67 53.7 ± 12.3  
   Crude 232/842 27.6 ± 3.0 131/504 26.0 ± 3.8   182/515 35.3 ± 4.1  
   Standardized*   24.4 ± 2.4   23.6 ± 3.0 0.842   30.2 ± 3.5 0.003
  1. *The calculations were weighted based on the 2006 population distribution of Shaanxi province. SD: standard deviation.