The CLHLS dyadic subsample has unique strengths: the mean age of old parents is 83.6 (SD=11.0) and the mean age of adult children is 50.3 (SD=8.6).
Extensive data were collected in the CLHLS through face-to-face interviews using internationally standardized questionnaires adapted to the Chinese cultural and social context.
We did not control for the adult children's characteristics in our analysis on disabled older parents' satisfaction with care received, because data of detailed adult children's characteristics were only collected in the sub-sample of dyadic pairs of adult children and their elderly parents from the 8 provinces but we used the entire CLHLS sample from the 22 provinces here.
The dataset used in this analysis includes information from the 4,240 dyadic pairs of adult children and their elderly parents, interviewed in the CLHLS 2002 wave.
These findings are fully consistent with those of a recent study (based on the CLHLS data) which reported that, as compared to having son(s), having daughter(s) is significantly more beneficial at older ages in China in terms of maintaining higher cognitive capacity and reducing mortality risk, and daughter-advantages are stronger among the oldest-old than the young-old and in rural areas than in urban areas (Zeng et al., 2016).
Based on the 2008-2009 CLHLS data, rural elderly receive 91 percent (p<0.001) more financial support (cash and materials) (3) from sons than daughters and urban elderly receive 31 percent (p<0.001) more from sons than daughters.
To ensure accurate age reporting among the sampled oldest-old interviewees, the CLHLS selected 22 provinces where Han Chinese are the majority and the other 9 provinces were excluded because minority ethnic groups whose age reporting is not accurate are the majority of the population.
Dupre (2008), "Assessment of Reliability of Mortality and Morbidity in the 1998-2002 CLHLS Waves," in Y.