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Table 2 Descriptive characteristics of the study population according to selected socio-demographic variables, National Health Interview Surveys, 1987-1994.

From: Estimates of complications of medical care in the adult US population

Characteristic Number (%*) Number (%*) Estimated size of total Estimated percentage of total Univariate
  of subjects reporting population reporting population reporting prevalence odds
   complication of complication of complication of medical care ratio (95%)
   medical care medical care (95% confidence interval)† confidence interval†
Sex      
   Male 133,533 (42.61) 1,467 (39.22) 3,148,699 0.59 (0.55-0.62) 1.00
   Female 179,885 (57.39) 2,273 (60.78) 4,686,767 0.62 (0.59-0.65) 0.98 (0.91-1.05)
Age, y      
   18-24 26,484 (8.45) 137 (3.66) 318,035 0.36 (0.30-0.42) 1.00
   25-34 54,177 (17.28) 437 (11.68) 964,060 0.52 (0.46-0.57) 1.48 (0.21-1.80)
   35-44 58,533 (18.67) 593 (15.86) 1,234,644 0.59 (0.54-0.64) 1.68 (1.37-2.05)
   45-54 47,343 (15.10) 582 (15.56) 1,202,700 0.64 (0.58-0.70) 1.77 (1.45-2.16)
   55-64 46,321 (14.78) 675 (18.05) 1,402,819 0.67 (0.61-0.73) 1.77 (1.46-2.14)
   65-74 46,266 (14.76) 774 (20.70) 1,577,256 0.70 (0.65-0.76) 1.80 (1.48-2.18)
   75 and older 34,314 (10.95) 542 (14.49) 1,135,952 0.63 (0.56-0.69) 1.58 (1.30-1.93)
Race      
   White 264,759 (84.47) 3,248 (86.84) 6,964,509 0.62 (0.59-0.65) 1.00
   Black 40,936 (13.06) 416 (11.12) 681,855 0.49 (0.44-0.55) 0.78 (0.70-0.88)
   Other 7,743 (2.47) 76 (2.03) 189,102 0.60 (0.46-0.75) 0.98 (0.77-1.26)
Region      
   Northeast 60,690 (19.36) 640 (17.11) 1,301,268 0.54 (0.49-0.60) 1.00
   Midwest 79,717 (25.43) 1,020 (27.27) 2,063,524 0.65 (0.59-0.70) 1.20 (1.06-1.37)
   South 107,068 (34.16) 1,325 (35.43) 2,844,560 0.62 (0.57-0.66) 1.14 (1.01-1.29)
   West 65,963 (21.04) 755 (20.19) 1,626,114 0.60 (0.55-0.65) 1.16 (1.02-1.31)
Education      
   None 2,338 (0.75) 17 (0.46) 36,156 0.34 (0.17-0.50) 1.00
   Elementary 38,727 (12.48) 627 (16.86) 1,253,608 0.65 (0.59-0.71) 1.99 (1.20-3.31)
   Some high school 42,311 (13.63) 626 (16.83) 1,270,559 0.69 (0.63-0.75) 2.19 (1.31-3.65)
   High school graduate 113,582 (36.60) 1,304 (35.06) 2,753,220 0.61 (0.57-0.65) 1.95 (1.17-3.24)
   Some college 59,247 (19.09) 643 (17.29) 1,380,437 0.59 (0.54-0.64) 1.90 (1.14-3.17)
   College graduate 30,244 (9.75) 286 (7.69) 631,982 0.56 (0.49-0.63) 1.74 (1.04-2.92)
   Post-graduate 23,901 (7.70) 216 (5.81) 464,106 0.50 (0.44-0.57) 1.56 (0.93-2.63)
Annual family income,      
× $1,000      
   less than 5 14,133 (5.39) 209 (6.53) 399,542 0.59 (0.50-0.68) 1.00
   5-14 58,044 (22.12) 910 (28.42) 1,840,201 0.65 (0.60-0.70) 1.10 (0.92-1.31)
   15-24 54,733 (20.86) 760 (23.74) 1,593,795 0.70 (0.64-0.75) 1.19 (1.01-1.40)
   25-34 42,195 (16.08) 450 (14.05) 976,522 0.60 (0.54-0.65) 1.02 (0.85-1.22)
   35-44 30,964 (11.80) 310 (9.68) 676,843 0.59 (0.52-0.66) 1.00 (0.83-1.22)
   45 and over 62,295 (23.74) 563 (17.58) 1,225,607 0.54 (0.49-0.59) 0.91 (0.76-1.09)
Major activity      
   Work 160,556 (51.22) 1,320 (35.29) 2,817,570 0.50 (0.47-0.54) 1.00
   Housekeeping 72,629 (23.17) 1,094 (29.25) 2,213,449 0.67 (0.63-0.71) 1.25 (1.14-1.36)
   School 12,911 (4.12) 94 (2.51) 219,536 0.48 (0.37-0.59) 0.95 (0.75-1.21)
   Other 67,342 (21.48) 1,232 (32.94) 2,584,911 0.73 (0.68-0.78) 1.40 (1.28-1.53)
Health status      
   Excellent 63,171 (20.23) 397 (10.65) 864,061 0.45 (0.40-0.50) 1.00
   Very good 79,749 (25.54) 581 (15.59) 1,216,534 0.45 (0.41-0.49) 0.98 (0.86-1.13)
   Good 92,786 (29.71) 1,067 (28.64) 2,201,757 0.60 (0.56-0.64) 1.33 (1.17-1.50)
   Fair 51,499 (16.49) 938 (25.17) 1,949,144 0.72 (0.66-0.78) 1.57 (1.37-1.80)
   Poor 25,092 (8.03) 743 (19.94) 1,571,466 0.87 (0.80-0.94) 1.89 (1.64-2.17)
  1. * Figures are percentages of the total characteristic. † Figures take into consideration sampling weights due to complex sampling methodology.