Table 1.

Demographic information of the final sample (N = 221)

Variable	M (SD)/%
Families involving married couples	97.74%
Percentage of fathers in the sample	97.74%
Percentage of mothers in the sample	100.00%
Mothers’ age (in years, at baseline)	36.45 (4.35)
Fathers’ age (in years, at baseline)	39.66 (6.18)
Child age (in years, at baseline)	3.87 (.30)
Household income per month
1. < HK$10,000 (< US$1282)	1.86%
2. HK$10,001–15,000 (US$1282–1923)	6.51%
3. HK$15,001–20,000 (US$1923–2564)	11.63%
4. HK$20,001–50,000 (US$2564–6410)	44.64%
5. HK$50,001–80,000 (US$6410–10,256)	15.81%
6. HK$80,001–100,000 (US$10,256–12,820)	4.65%
7. > HK$100,000 (> US$12,820)	14.88%
Employed full-time
Mothers	47.69%
Fathers	92.56%
Families which had domestic helpers	39.52%