Table 1.

Descriptive Statistics of All Variables, CHNS Pooled Sample, 1991–2006 (N = 14,954)

Variable	Mean	SD
Self-rated health (range 1–4)	2.40	0.77
Age	65.17	7.73
Living arrangement
Skipped generation	0.07	0.26
Three generation (ref. category: noncoresiding)	0.44	0.50
Paternal (paternal = 1, else = 0)	0.40	0.41
Caregiving intensity (Grandparents coresiding with grandchildren aged 0–6, N = 7,712)
High intensity (more than 15 hr per week)	0.04	0.21
Low intensity (less than 15 hr per week; ref. category: no-care)	0.04	0.21
Sex (male = 1, female = 0)	0.47	0.50
Died (dead = 1, not dead = 0)	0.12	0.32
Marital status (married = 1, not married = 0)	0.76	0.43
Urban (urban = 1, rural = 0)	0.39	0.49
Education (more than primary school = 1, else = 0)	0.49	0.50
Family Income (lowest quintile = 0, else = 1)	0.80	0.40
Working (working = 1, else = 0)	0.37	0.48
Medically Insured (yes = 1, else = 0)	0.36	0.48
Number of children in the household (age 0–16)	0.56	0.81
One parent present (both parents present = 0)	0.03	0.17
Smoking (smoking = 1, not smoking = 0)	0.31	0.46
Drinking (drinking = 1, not drinking = 0)	0.28	0.45