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Table 1 Descriptive statistics for the analyzed variables

From: Classifying and characterizing the development of self-reported overall quality of life among the Chinese elderly: a twelve-year longitudinal study

Analyzed Variables Mean (SD)
Focal variables
 self-reported overall QoL (2002) 3.67(0.81)
 self-reported overall QoL (2005) 3.67(0.81)
 self-reported overall QoL (2008) 3.68(0.80)
 self-reported overall QoL (2011) 3.74(0.87)
 self-reported overall QoL (2014) 3.80(0.83)
Basic variables (2002)
 Age 72.73(6.64)
 Gender, male 0.47(0.50)
 Ethnicity, Han 0.93(0.26)
 Financial resources, enough 0.81(0.39)
 Smoking status, current smoker 0.25(0.43)
 Drinking status, current drinker 0.25(0.43)
Dietary variables (2002)
 Eat fresh fruit 0.79(0.41)
 Eat meat 0.85(0.36)
 Eat fish 0.74(0.44)
 Eat eggs 0.86(0.35)
 Drink tea 0.53(0.50)
Functional variables (2002)
 Bathing disability 0.03(0.17)
 Dressing disability 0.01(0.09)
 Toileting disability 0.01(0.08)
 Transferring disability 0.00(0.07)
 Continence disability 0.00(0.06)
 Feeding disability 0.00(0.07)
Behavioral variables (2002)
 Do physical labor regularly 0.85(0.35)
 Do housework 0.87(0.34)
 Read newspapers/books 0.27(0.45)
 Watch TV or listen to the radio 0.84(0.37)
 Take part in some social activities 0.21(0.41)