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. Author manuscript; available in PMC: 2012 Jul 1.
Published in final edited form as: J Hum Cap. 2011 Summer;5(2):207–254. doi: 10.1086/660885

Table A1.

Principal Component Analysis Scoring Coefficients of the Socioeconomic Status Index and Variable Distributions by Low and High SES

% of Low SES % of High SES
Radio
 No −0.632185 4.89 0.13
 Yes 0.016128 95.11 99.87
TV
 No −0.755131 6.89 0.38
 Yes 0.028397 93.11 99.62
Fridge
 No −0.694741 13.91 0.00
 Yes 0.052056 86.09 100.00
Car
 No −0.233947 91.35 32.44
 Yes 0.383183 8.65 67.56
Domestic Worker in the household
 No −0.057167 99.25 81.81
 Yes 0.548867 0.75 18.19
Works on own of family’s agricultural land
 No 0.001094 95.74 94.78
 Yes −0.021888 4.26 5.22
Source of drinking water
 Piped drinking water in residence 0.029651 85.21 94.53
 Piped drinking water outside residence −0.209026 7.64 0.25
 Bottled water −0.248698 2.01 3.31
 Connected to a river or creek −0.274512 0.88 1.78
 Inside well or spring −0.307492 2.38 0.13
 Outside well or spring −0.377437 1.50 0.00
 Other sources of drinking water −0.466433 0.38 0.00
Type of toilet and sewage facility
 Connected to a sewer 0.144828 50.25 87.91
 Connected to an open sewer −0.19787 19.17 7.63
 Latrine with connection to sewer −0.30963 11.90 3.44
 Latrine not connected to sewer −0.388643 5.51 0.25
 Pit Latrine −0.521288 12.28 0.76
 Bush, field as latrine −0.765067 0.50 0.00
 Other type of latrine −0.880206 0.38 0.00
Principal type of flooring in dwelling
 Earth, sand −0.63901 2.76 3.31
 Wood, plank −0.433934 9.15 10.69
 Cement −0.207166 44.11 51.65
 Clay tile 0.04324 33.96 12.34
 Polished wood or parquet 0.223571 1.63 3.56
 Carpeted flooring 0.267852 0.25 18.45
 Other type of flooring 0.404263 8.15 0.00
Principal wall material
 Cane, palm, trunks −0.167255 2.76 0.13
 Mud walls −0.113471 5.01 0.89
 Wood planks −0.085943 68.92 1.15
 Alvenaria (finished) walls −0.010544 13.66 82.82
 Polished wood 0.04932 9.65 4.20
 Other material for walls 0.081458 0.00 10.81
Principal roofing material
 Natural material −0.250747 0.88 0.89
 Raw wood −0.181209 2.26 5.22
 Roofing tiles −0.14499 4.01 1.27
 Cement or concrete −0.100623 18.67 9.41
 Zinc materials −0.032672 35.71 25.32
 Polished wood 0.018732 12.91 11.58
Eternit, amianto roof 0.038528 2.88 5.22
 Other roofing 0.103674 22.68 41.09
 Number of individuals per sleeping room −0.25028 2.99 (1.1206) 2.18 (.5876)
Maternal education
 None – illiterate −1.101032 0.50 1.65
 Primary – incomplete −0.546629 26.82 4.58
 Primary – complete −0.27423 25.69 12.21
 Secondary – incomplete −0.093297 27.44 43.77
 Secondary – complete 0.140047 17.67 16.54
 University – incomplete 0.365543 1.63 21.25
 University – complete 0.608683 0.25 0.00
Maternal Occupation
 Unemployed −0.157354 80.08 47.46
 Unqualified worker (blue collar) 0.122612 10.90 3.94
 Qualified worker (blue collar) 0.168018 2.13 6.36
 Independent worker 0.204266 2.26 6.23
 Clerk (white collar) 0.30241 4.51 22.90
 Boss, chief, owner 0.411081 0.13 1.27
 Professional, executive 0.532899 0.00 11.83