1772
In group 1 , mean z - score for GFR was - 0 . 27 ( 94 . 6 % of normal ) and in group 2 mean z - score was - 1 . 51 ( 72 . 7 % of normal for two kidneys ) ( P = 0 . 022 , Mann - Whitney U - test ) .
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Please list all entity words in the text that fit the category.Output format is "type1: word1; type2: word2". 
Option: GENE 
Text: {0} 
Answer:
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