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. Author manuscript; available in PMC: 2012 Sep 1.
Published in final edited form as: Optom Vis Sci. 2011 Sep;88(9):1045–1053. doi: 10.1097/OPX.0b013e31822171ad

Table 1.

Demographic characteristics of the sample.

Education n (%) Mothers Fathers Occupation n (%) Mothers Fathers
Did not complete high school 31(8.27%) 15(5.95%) 1: Executive, administrative, managerial 31(8.27%) 21(8.33%)
High school 73(19.47%) 53(21.03%) 2: Professional, technical 134(35.73%) 109(43.25%)
Some college/technical school 94(25.07%) 51(20.24%) 3: Marketing, sales 15(4.00%) 15(5.95%)
Completed four-year college 106(28.27%) 59(23.41%) 4: Administrative support, including clerical 70(18.67%) 13(5.16%)
Graduate or professional school 71(18.93%) 74(29.37%) 5: Service 46(12.27%) 24(9.52%)
 Total n (%) 375 (100%) 252 (100%) 6: Mechanic, installer, repairer 0(0.00%) 13(5.16%)
7: Construction trade 0(0.00%) 23(9.13%)
8: Production 1(0.27%) 16(6.35%)
9: Transportation, material moving 3(0.80%) 13(5.16%)
10: Other (e.g. homemaker) 75(20.00%) 5(1.98%)
 Total n (%) 375 (100%) 252 (100%)