DemographicsBack

The raw data collected have been weighted according to preliminary figures obtained from the Census and Statistics Department regarding the gender-age distribution of the Hong Kong population in 2007 mid-year.

Gender

	Raw sample		Weighted sample
	Frequency	Percentage	Frequency	Percentage
Male	381	37.7%	471	46.7%
Female	629	62.3%	539	53.3%
Total	1,010	100.0%	1,010	100.0%
Base	1,010		1,010

Age

	Raw sample		Weighted sample
	Frequency	Percentage	Frequency	Percentage
18-20	70	7.1%	44	4.5%
21-29	99	10.1%	152	15.5%
30-39	158	16.1%	193	19.6%
40-49	222	22.6%	225	22.9%
50-59	215	21.9%	171	17.5%
60 or above	218	22.2%	196	20.0%
Total	982	100.0%	982	100.0%
Base	1,010		1,010
Missing	28		28

Education attainment

	Raw sample		Weighted sample
	Frequency	Percentage	Frequency	Percentage
Primary or below	233	23.3%	198	19.8
Secondary	537	53.7%	531	53.0
Tertiary or above	230	23.0%	272	27.2
Total	1,000	100.0%	1,001	100.0%
Base	1,010		1,010
Missing	10		9

Occupation

	Raw sample		Weighted sample
	Frequency	Percentage	Frequency	Percentage
Professionals and semi-professionals	147	14.8%	188	18.9%
Clerk and service workers	229	23.1%	249	25.1%
Production workers	101	10.2%	113	11.3%
Students	71	7.2%	61	6.1%
Housewives	216	21.8%	169	17.0%
Others	228	23.0%	214	21.5%
Total	992	100.0%	993	100.0%
Base	1,010		1,010
Missing	18		17

Demographic information of urinary stone patients or their family members only (weighted sample)

Age

	Patients		Family members		Sub-total
	Frequency	Percentage	Frequency	Percentage	Frequency	Percentage
Male	15	59.8%	28	40.3%	43	45.3
Female	10	40.2%	42	59.7%	52	54.7
Total	25	100.0%	70	100.0%	95	100.0%
Base	25		70		95

Age

	Patients		Family members		Sub-total
	Frequency	Percentage	Frequency	Percentage	Frequency	Percentage
18-20	0	0.0%	3	4.6%	3	3.4%
21-29	0	0.0%	8	11.0%	8	8.1%
30-39	2	6.3%	16	22.8%	17	18.5%
40-49	4	18.2%	19	27.9%	24	25.3
50-59	10	38.9%	15	21.9%	25	26.3
60 or above	9	36.6%	8	11.8%	17	18.3
Total	25	100.0%	69	100.0%	93	100.0%
Base	25		70		95
Missing	0		1		2

Education attainment

	Patients		Family members		Sub-total
	Frequency	Percentage	Frequency	Percentage	Frequency	Percentage
Primary or below	11	44.3%	12	17.0%	23	24.1%
Secondary	12	49.4%	38	54.4%	50	53.1%
Tertiary or above	2	6.3%	20	28.6%	22	22.8%
Total	25	100.0%	70	100.0%	95	100.0%
Base	25		70		95

Occupation

	Patients		Family members		Sub-total
	Frequency	Percentage	Frequency	Percentage	Frequency	Percentage
Professionals and semi-professionals	1	4.6%	15	22.5%	16	17.8
Clerk and service workers	3	10.9%	21	31.1%	24	25.9
Production workers	7	30.7%	2	3.1%	9	10.2
Students	0	0.0%	3	4.7%	3	3.5
Housewives	5	20.9%	13	19.0%	18	19.5
Others	8	32.9%	13	19.7%	21	23.1
Total	24	100.0%	68	100.0%	92	100.0%
Base	25		70		95
Missing	1		2		3