Table 1 Descriptive statistics for the analyzed variables
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) |