Table 10: Key Variable definitions and summary statistics (Private -licensed and private non-licensed)

Variables	Total(n=1,084)	Licensed profit facility(n=173)	Licensed private facility(n=911)
Mean	Standard deviation	Mean	Standard deviation	Mean	Standard deviation
Monthly wage including various types of compensation	245,454.300	(99,248.270)	160,255.500	(61,035.020)	261,633.700	(96,833.300)
Daily wage including various types of compensation	11,977.690	(4,283.691)	8,535.509	(2,648.747)	12,631.370	(4,222.813)
Hourly salary including various types of compensation	1,515.744	(522.665)	1,050.647	(246.432)	1,604.067	(514.491)
Natural logarithm of monthly wage	12.315	(0.468)	11.895	(0.459)	12.395	(0.426)
Natural logarithm of daily wage	9.325	(0.371)	9.007	(0.300)	9.385	(0.352)
Natural logarithm of hourly wage	7.268	(0.330)	6.934	(0.208)	7.331	(0.311)
=1 if monthly wage > average monthly wage	0.411	(0.492)	0.029	(0.168)	0.483	(0.500)
=1 if daily wage > average daily wage	0.387	(0.487)	0.069	(0.255)	0.448	(0.498)
=1 if hourly wage > average hourly wage	0.413	(0.493)	0.058	(0.234)	0.481	(0.500)
Share of regular workers	0.854	(0.221)	0.853	(0.271)	0.854	(0.210)
Share of qualified workers	0.857	(0.234)	0.739	(0.216)	0.879	(0.231)
Actual number of children per worker	5.554	(2.703)	2.001	(1.740)	6.229	(2.296)
Actual number of children per regular worker	6.363	(2.810)	2.448	(1.829)	7.125	(2.285)
Actual number of children per qualified worker	10.426	(22.150)	2.570	(1.992)	11.923	(23.864)
Working days in April, 2002	21.596	(2.415)	19.436	(3.921)	22.004	(1.732)
Average working hours per day in 2002	7.359	(1.066)	7.660	(1.393)	7.302	(0.983)
=1 if male	0.045	(0.208)	0.017	(0.131)	0.050	(0.219)
Years of age	34.001	(11.683)	34.919	(11.949)	33.827	(11.631)
Years of age squared	1,292.438	(932.276)	1,361.301	(933.382)	1,279.361	(932.004)
=1 if age is equal to or greater than 20 and less than 30	0.486	(0.500)	0.445	(0.498)	0.494	(0.500)
=1 if age is equal to or greater than 30 and less than 40	0.201	(0.401)	0.208	(0.407)	0.200	(0.400)
=1 if age is equal to or greater than 40 and less than 50	0.185	(0.389)	0.197	(0.399)	0.183	(0.387)
=1 if age is equal to or greater than 50 and less than 60	0.103	(0.305)	0.127	(0.334)	0.099	(0.299)
=1 if age is equal to or greater than 60	0.023	(0.150)	0.023	(0.151)	0.023	(0.150)
Years of experience	8.019	(8.175)	6.682	(7.803)	8.273	(8.223)
Years of experience squared	131.076	(252.487)	105.181	(226.964)	135.993	(256.868)
=1 if university graduate	0.078	(0.269)	0.116	(0.321)	0.071	(0.258)
=1 if community college graduate	0.551	(0.498)	0.480	(0.501)	0.564	(0.496)
=1 if professional training school graduate	0.242	(0.428)	0.237	(0.426)	0.243	(0.429)
=1 if others	0.129	(0.336)	0.168	(0.375)	0.122	(0.327)
=1 if qualified child care worker	0.708	(0.455)	0.665	(0.473)	0.717	(0.451)
=1 if regular worker	0.686	(0.464)	0.728	(0.446)	0.678	(0.467)
=1 if nonregular worker with long hours of work	0.058	(0.234)	0.092	(0.291)	0.052	(0.221)
=1 if care worker with short hours of work	0.059	(0.236)	0.040	(0.198)	0.063	(0.242)
=1 if chief or director of child care workers	0.040	(0.195)	0.064	(0.245)	0.035	(0.184)
=1 if number of employees is equal to or less than 5	0.007	(0.086)	0.023	(0.151)	0.004	(0.066)
=1 if number of employees is greater than 5 and equal to or less than 10	0.110	(0.313)	0.630	(0.484)	0.011	(0.104)
=1 if number of employees is greater than 10	0.883	(0.322)	0.347	(0.477)	0.985	(0.123)
Actual number of children/maximum number of children (0 years old)	0.812	(0.299)	0.554	(0.339)	0.845	(0.276)
Actual number of children/maximum number of children (1-2 years old)	1.067	(0.314)	0.864	(0.651)	1.088	(0.248)
Actual number of children/maximum number of children (3 years old)	1.071	(0.261)	0.238	(0.497)	1.112	(0.154)
Actual number of children/maximum number of children (4 years old)	0.946	(0.211)	0.000	(0.000)	0.956	(0.189)
=1 if special care provided (extra hours of care)	0.685	(0.465)	0.653	(0.477)	0.692	(0.462)
Total hours of care	2.469	(0.063)	2.556	(0.085)	2.456	(0.046)