Tables with Unweighted and Weighted Values

FILE e-1

Tables with unweighted and weighted values.

Table 1 with unweighted and weighted values. Demographic characteristics. Quantitative variables are summarized as mean (standard deviation –for the sample— and standard error of the mean –for population estimates—). Categorical variables are summarized as number (percentage).

PATIENT DATA
KID / NIS
Unweighted / Weighted / Unweighted / Weighted
Age (years) / 6.7 (7.9) / 4.5 (0.04) / 58.2 (20.0) / 58.2 (0.1)
Gender / Male / 1,503,170 (47.1%) / 3,194,495 (47.9%) / 2,460,900 (41.1%) / 12,304,502 (41.1%)
Female / 1,691,792 (52.9%) / 3,478,334 (52.1%) / 3,531,727 (58.9%) / 17,658,637 (58.9%)
Race / White / 1,470,720 (50.1%) / 3,138,004 (51.2%) / 3,927,961 (69.1%) / 19,639,804 (69.1%)
Black / 524,260 (17.9%) / 1,001,246 (16.4%) / 822,727 (14.5%) / 4,113,639 (14.5%)
Hispanic / 630,127 (21.5%) / 1,290,955 (21.1%) / 568,938 (10.0%) / 2,844,692 (10.0%)
Other / 308,350 (10.5%) / 694,805 (11.3%) / 362,111 (6.4%) / 1,810,556 (6.4%)
Elective versus non-elective admission / Elective / 477,934 (15.0%) / 679,843 (10.2%) / 1,503,674 (25.2%) / 7,518,369 (25.2%)
Non-elective / 2,707,954 (85.0%) / 5,979,431 (89.8%) / 4,467,258 (74.8%) / 22,336,295 (74.8%)
Length of hospital stay (days) / 4.8 (10.5) / 3.8 (0.04) / 4.7 (6.1) / 4.7 (0.02)
HOSPITAL DATA
KID / NIS
Hospital region / Northeast / 518 (12.4%) / 568 (13.0%)
Midwest / 1,310 (31.4%) / 1,370 (31.3%)
South / 1,520 (36.4%) / 1,586 (36.2%)
West / 831 (19.9%) / 854 (19.5%)
Hospital division / New England / 115 (2.8%) / 124 (2.8%)
Middle Atlantic / 403 (9.6%) / 444 (10.1%)
East North Central / 710 (17.0%) / 731 (16.7%)
West North Central / 600 (14.4%) / 639 (14.6%)
South Atlantic / 683 (16.3%) / 706 (16.1%)
East South Central / 202 (4.8%) / 214 (4.9%)
West South Central / 635 (15.2%) / 666 (15.2%)
Mountain / 321 (7.7%) / 329 (7.5%)
Pacific / 510 (12.2%) / 525 (12.0%)
Hospital control / Government, nonfederal / 782 (18.7%) / 837 (19.1%)
Private, not-profit / 2,597 (62.1%) / 2,762 (63.1%)
Private, invest-own / 800 (19.1%) / 779 (17.8%)
Location and teaching status / Rural / 1,576 (37.7%) / 1,666 (38.1%)
Urban non-teaching / 1,736 (41.5%) / 1,728 (39.5%)
Urban teaching / 867 (20.8%) / 984 (22.5%)
Bedsize of hospital / Small / 1,734 (41.5%) / 1,915 (43.7%)
Medium / 1,087 (26.0%) / 1,131 (25.8%)
Large / 1,358 (32.5%) / 1,332 (30.4%)

Legend:KID: Kid’s Inpatient Database. NIS: National Inpatient Survey.

Table 2 with unweighted and weighted values.Racial distribution of different types of brain surgeries stratified by socioeconomic status. Values are presented as percentages. Frequencies are not reportable (see “Data reporting” subsection).

Brain tumor / Vascular malformation / Traumatic brain injury / Intracranial hemorrhage / Epilepsy surgery / Total brain surgery / Focal refractory epilepsy / Total population
KID unweighted
Lower quartile / White / 43.0% / 34.0% / 39.1% / 37.1% / 52.2% / 44.0% / 50.5% / 37.8%
Black / 20.9% / 17.0% / 24.6% / 19.0% / 16.7% / 21.2% / 23.6% / 27.9%
Hispanic / 27.4% / 39.6% / 27.8% / 32.2% / 23.3% / 26.7% / 20.4% / 26.2%
Other / 8.7% / 9.4% / 8.4% / 11.7% / 7.8% / 8.1% / 5.4% / 8.1%
Second quartile / White / 60.4% / 50.8% / 57.9% / 53.1% / 70% / 61.3% / 60.8% / 53.3%
Black / 10.1% / 10.8% / 12.3% / 16.5% / 7.5% / 11.4% / 12.6% / 16.2%
Hispanic / 18.2% / 23.1% / 21.3% / 20.6% / 17.5% / 18.8% / 20.3% / 21.8%
Other / 11.4% / 15.4% / 8.6% / 9.8% / 5% / 8.4% / 6.3% / 8.7%
Third quartile / White / 68.4% / 53.2% / 57.8% / 49.0% / 67.0% / 62.3% / 63.4% / 55.8%
Black / 6.4% / 3.2% / 10.6% / 13.0% / 6.4% / 8.5% / 10.2% / 13.1%
Hispanic / 16.3% / 27.4% / 21.7% / 22.0% / 12.8% / 18.6% / 16.3% / 20.3%
Other / 8.9% / 16.1% / 9.9% / 16.0% / 13.8% / 10.6% / 10.2% / 10.9%
Upper quartile / White / 67.9% / 66.7% / 67.3% / 59.3% / 71.8% / 69.4% / 65.7% / 61.4%
Black / 5.4% / 6.7% / 6.2% / 9.0% / 2.6% / 5.7% / 5.5% / 9.2%
Hispanic / 11.1% / 5.3% / 12.7% / 15.8% / 12.0% / 10.3% / 10.2% / 14.1%
Other / 15.6% / 21.3% / 13.8% / 15.8% / 13.7% / 14.7% / 18.6% / 15.4%
KID weighted
Lower quartile / White / 43.6% / 34.7% / 39.5% / 37.4% / 53.1% / 44.4% / 50.7% / 39.5%
Black / 20.8% / 16.0% / 24.5% / 19.0% / 16.2% / 21.1% / 23.7% / 25.9%
Hispanic / 27.3% / 40.0% / 27.8% / 32.2% / 23.1% / 26.6% / 20.6% / 26.2%
Other / 8.4% / 9.3% / 8.2% / 11.4% / 7.7% / 7.8% / 5.3% / 8.5%
Second quartile / White / 60.5% / 51.1% / 57.9% / 52.7% / 71.1% / 61.4% / 61% / 54.5%
Black / 10.4% / 11.1% / 12.6% / 16.7% / 7.0% / 11.6% / 12.6% / 14.9%
Hispanic / 17.9% / 23.3% / 21.1% / 20.7% / 16.7% / 18.7% / 20.2% / 21.4%
Other / 11.2% / 14.4% / 8.5% / 9.8% / 5.3% / 8.3% / 6.2% / 9.3%
Third quartile / White / 68.1% / 53.5% / 57.7% / 49.5% / 66.9% / 62.4% / 63.5% / 56.4%
Black / 6.7% / 3.5% / 10.9% / 13.3% / 6.8% / 8.7% / 10.1% / 12.0%
Hispanic / 16.3% / 27.9% / 21.6% / 21.9% / 12.8% / 18.5% / 16.5% / 19.7%
Other / 8.9% / 15.1% / 9.9% / 15.4% / 13.5% / 10.5% / 9.9% / 11.9%
Upper quartile / White / 68.0% / 66.4% / 67.5% / 59.5% / 72.0% / 69.5% / 66.1% / 60.9%
Black / 5.6% / 6.7% / 6.4% / 8.9% / 2.4% / 5.7% / 5.5% / 8.3%
Hispanic / 11.2% / 5.8% / 12.4% / 15.8% / 12.2% / 10.3% / 10.3% / 13.7%
Other / 15.3% / 21.2% / 13.7% / 15.8% / 13.4% / 14.4% / 18.1% / 17.1%
NIS unweighted
Lower quartile / White / 66.3% / 54.0% / 60.0% / 53.6% / 70.4% / 61.1% / 54.0% / 58.8%
Black / 17.9% / 16.0% / 20.0% / 26.6% / 13.0% / 20.8% / 24.3% / 23.7%
Hispanic / 10.6% / 22.0% / 12.6% / 13.5% / 11.1% / 12.1% / 14.2% / 12.5%
Other / 5.2% / 8.0% / 7.5% / 6.3% / 5.6% / 6.1% / 7.5% / 5.1%
Second quartile / White / 77.4% / 51.0% / 72.4% / 67.5% / 76.5% / 73.2% / 65.1% / 72.8%
Black / 9.5% / 16.3% / 10.1% / 14.1% / 7.8% / 11.1% / 13.9% / 12.6%
Hispanic / 6.7% / 16.3% / 9.9% / 9.8% / 9.8% / 8.6% / 12.0% / 9.6%
Other / 6.4% / 16.3% / 7.6% / 8.7% / 5.9% / 7.0% / 9.0% / 5.1%
Third quartile / White / 76.6% / 70.7% / 72.7% / 67.2% / 80.4% / 72.3% / 72.1% / 73.4%
Black / 7.2% / 5.2% / 8.7% / 12.3% / 5.4% / 9.3% / 12.0% / 10.4%
Hispanic / 8.0% / 15.5% / 9.9% / 9.8% / 7.1% / 9.7% / 8.0% / 9.5%
Other / 8.3% / 8.6% / 8.8% / 10.7% / 7.1% / 8.7% / 8.0% / 6.7%
Upper quartile / White / 79.5% / 70.8% / 76.3% / 68.6% / 71.4% / 75.6% / 69.4% / 76.7%
Black / 5.3% / 5.6% / 5.3% / 7.7% / 4.1% / 5.9% / 9.8% / 7.4%
Hispanic / 4.3% / 8.3% / 7.2% / 7.9% / 12.3% / 6.1% / 6.8% / 6.8%
Other / 10.9% / 15.3% / 11.2% / 15.8% / 12.3% / 12.4% / 13.9% / 9.1%
NIS weighted
Lower quartile / White / 66.3% / 54% / 60.0% / 53.6% / 70.4% / 61.1% / 54.0% / 58.8%
Black / 17.9% / 16% / 20.0% / 26.6% / 13.0% / 20.8% / 24.3% / 23.7%
Hispanic / 10.6% / 22% / 12.6% / 13.5% / 11.1% / 12.1% / 14.2% / 12.5%
Other / 5.2% / 8% / 7.5% / 6.3% / 5.6% / 6.1% / 7.5% / 5.1%
Second quartile / White / 77.4% / 51.0% / 72.4% / 67.5% / 76.5% / 73.2% / 65.1% / 72.8%
Black / 9.5% / 16.3% / 10.1% / 14.1% / 7.8% / 11.1% / 13.9% / 12.6%
Hispanic / 6.7% / 16.3% / 9.9% / 9.8% / 9.8% / 8.6% / 12.0% / 9.6%
Other / 6.4% / 16.3% / 7.6% / 8.7% / 5.9% / 7.0% / 9.0% / 5.1%
Third quartile / White / 76.6% / 70.7% / 72.7% / 67.2% / 80.4% / 72.3% / 72.1% / 73.4%
Black / 7.2% / 5.2% / 8.7% / 12.3% / 5.4% / 9.3% / 12.0% / 10.4%
Hispanic / 8.0% / 15.5% / 9.9% / 9.8% / 7.1% / 9.7% / 8.0% / 9.5%
Other / 8.3% / 8.6% / 8.8% / 10.7% / 7.1% / 8.7% / 8.0% / 6.7%
Upper quartile / White / 79.5% / 70.8% / 76.3% / 68.6% / 71.4% / 75.6% / 69.4% / 76.7%
Black / 5.3% / 5.6% / 5.3% / 7.7% / 4.1% / 5.9% / 9.8% / 7.4%
Hispanic / 4.3% / 8.3% / 7.2% / 7.9% / 12.3% / 6.1% / 6.8% / 6.8%
Other / 10.9% / 15.3% / 11.2% / 15.8% / 12.3% / 12.4% / 13.9% / 9.1%

Legend:KID: Kid’s Inpatient Database. NIS: National Inpatient Survey.

Table 3 with unweighted and weighted values. Gender distribution of brain surgery stratified by socioeconomic status. Values are displayed as frequency (percentage).

Brain tumor / Vascular malformation / Traumatic brain injury / Intracranial hemorrhage / Epilepsy surgery / Total brain surgery / Focal refractory epilepsy / Total population
KID unweighted
Lower quartile / Male / 255 (50.3%) / 25 (46.3%) / 452 (73.6%) / 137 (62.3%) / 50 (50.5%) / 1,327 (60.0%) / 426 (52.0%) / 445,669 (44.8%)
Female / 252 (49.7%) / 29 (53.7%) / 162 (26.4%) / 83 (37.7%) / 49 (49.5%) / 884 (40.0%) / 393 (48.0%) / 549,943 (55.2%)
Second
quartile / Male / 263 (58.6%) / 39 (54.9%) / 362 (72.3%) / 130 (59.4%) / 52 (59.8%) / 1,299 (60.8%) / 401 (55.0%) / 358,158 (46.3%)
Female / 186 (41.4%) / 32 (45.1%) / 139 (27.8%) / 89 (40.6%) / 35 (40.2%) / 836 (39.2%) / 328 (45.0%) / 414,870 (53.7%)
Third quartile / Male / 306 (56.4%) / 29 (46.0%) / 344 (72.7%) / 127 (57.2%) / 50 (49.0%) / 1,318 (58.3%) / 438 (51.5%) / 349,173 (47.9%)
Female / 237 (43.7%) / 34 (54.0%) / 129 (27.3%) / 95 (42.8%) / 52 (51.0%) / 944 (41.7%) / 413 (48.5%) / 379,583 (52.1%)
Upper quartile / Male / 326 (54.6%) / 37 (46.8%) / 314 (75.5%) / 121 (59.0%) / 74 (56.9%) / 1,346 (58.1%) / 516 (52.0%) / 318,295 (50.4%)
Female / 271 (45.4%) / 42 (53.2%) / 102 (24.5%) / 84 (41.0%) / 56 (43.1%) / 972 (41.9%) / 476 (48.0%) / 312,842 (49.6%)
KID weighted
Lower quartile / Male / 365 (50.3%) / 35 (46.1%) / 635 (73.6%) / 194 (62.4%) / 73 (51.4%) / 1,889 (60.0%) / 612 (52.1%) / 936,096 (46.3%)
Female / 361 (49.7%) / 41 (54.0%) / 228 (26.4%) / 117 (37.6%) / 69 (48.6%) / 1,259 (40.0%) / 563 (47.9%) / 1,087,697 (53.8%)
Second quartile / Male / 375 (58.6%) / 53 (54.1%) / 506 (72.2%) / 184 (59.6%) / 74 (60.2%) / 1,837 (60.8%) / 568 (54.8%) / 769,166 (47.4%)
Female / 265 (41.4%) / 45 (45.9%) / 195 (27.8%) / 125 (40.5%) / 49 (39.8%) / 1,184 (39.2%) / 469 (45.2%) / 854,096 (52.6%)
Third quartile / Male / 434 (56.4%) / 41 (46.6%) / 477 (72.7%) / 179 (57.6%) / 70 (48.6%) / 1,851 (58.2%) / 614 (51.3%) / 749,266 (48.5%)
Female / 335 (43.6%) / 47 (53.4%) / 179 (27.3%) / 132 (42.4%) / 74 (51.4%) / 1,331 (41.8%) / 584 (48.8%) / 796,710 (51.5%)
Upper quartile / Male / 461 (54.6%) / 51 (46.4%) / 433 (75.3%) / 168 (58.7%) / 104 (56.8%) / 1,887 (57.9%) / 721 (52.0%) / 677,242 (50.2%)
Female / 384 (45.4%) / 59 (53.6%) / 142 (24.7%) / 118 (41.3%) / 79 (43.2%) / 1,370 (42.1%) / 665 (48.0%) / 672,351 (49.8%)
NIS unweighted
Lower quartile / Male / 906 (45.5%) / 39 (60%) / 1,052 (71.5%) / 782 (59.3%) / 30 (38.0%) / 3,129 (56.3%) / 243 (42.7%) / 927,582 (42.4%)
Female / 1,085 (54.5%) / 26 (40%) / 420 (28.5%) / 537 (40.7%) / 49 (62.0%) / 2,428 (43.7%) / 326 (57.3%) / 1,261,298 (57.6%)
Second quartile / Male / 928 (46.4%) / 31 (40.8%) / 863 (69.0%) / 725 (62.5%) / 42 (49.4%) / 2,889 (55.3%) / 219 (46.9%) / 748,506 (42.2%)
Female / 1,072 (53.6%) / 45 (59.2%) / 388 (31.0%) / 436 (37.6%) / 43 (50.6%) / 2,336 (44.7%) / 248 (53.1%) / 1,027,193 (57.9%)
Third quartile / Male / 1,019 (47.4%) / 38 (50.7%) / 836 (68.4%) / 751 (58.8%) / 42 (51.9%) / 2,954 (54.6%) / 219 (46.9%) / 705,238 (41.9%)
Female / 1,132 (52.6%) / 37 (49.3%) / 386 (31.6%) / 526 (41.2%) / 39 (48.2%) / 2,460 (45.4%) / 248 (53.1%) / 979,887 (58.2%)
Upper quartile / Male / 1,135 (46.6%) / 46 (50%) / 817 (68.7%) / 708 (60.8%) / 56 (59.0%) / 3,061 (54.5%) / 199 (48.5%) / 626,110 (42.2%)
Female / 1,300 (53.4%) / 46 (50%) / 373 (31.4%) / 457 (39.2%) / 39 (41.1%) / 2,552 (45.5%) / 211 (51.5%) / 857,768 (57.8%)
NIS weighted
Lower quartile / Male / 4,530 (45.5%) / 195 (60%) / 5,260 (71.5%) / 3,910 (59.3%) / 150 (38.0%) / 15,645 (56.3%) / 1215 (42.7%) / 4,637,909 (42.4%)
Female / 5,425 (54.5%) / 130 (40%) / 2,100 (28.5%) / 2,685 (40.7%) / 245 (62.0%) / 12,140 (43.7%) / 1630 (57.3%) / 6,306,495 (57.6%)
Second quartile / Male / 4,640 (46.4%) / 155 (40.8%) / 4,315 (69.0%) / 3,625 (62.5%) / 210 (49.4%) / 14,445 (55.3%) / 1095 (46.9%) / 3,742,530 (42.2%)
Female / 5,360 (53.6%) / 225 (59.2%) / 1,940 (31.0%) / 2,180 (37.6%) / 215 (50.6%) / 11,680 (44.7%) / 1240 (53.1%) / 5,135,965 (57.9%)
Third quartile / Male / 5,095 (47.4%) / 190 (50.7%) / 4,180 (68.4%) / 3,755 (58.8%) / 210 (51.9%) / 14,770 (54.6%) / 1095 (46.9%) / 3,526,190 (41.9%)
Female / 5,660 (52.6%) / 185 (49.3%) / 1,930 (31.6%) / 2,630 (41.2%) / 195 (48.2%) / 12,300 (45.4%) / 1240 (53.1%) / 4,899,434 (58.2%)
Upper quartile / Male / 5,675 (46.6%) / 230 (50%) / 4,085 (68.7%) / 3,540 (60.8%) / 280 (59.0%) / 15,305 (54.5%) / 995 (48.5%) / 3,130,548 (42.2%)
Female / 6,500 (53.4%) / 230 (50%) / 1,865 (31.4%) / 2,285 (39.2%) / 195 (41.1%) / 12,760 (45.5%) / 1055 (51.5%) / 4,288,838 (57.8%)

Legend:KID: Kid’s Inpatient Database. NIS: National Inpatient Sample.

Table e-2 with unweighted and weighted values.Socioeconomic status distribution of brain surgery. Values are displayed as frequency (percentage).

Brain tumor / Vascular malformation / Traumatic brain injury / Intracranial hemorrhage / Epilepsy surgery / Total brain surgery / Total population
KID unweighted
Lower quartile / 507 (24.2%) / 54 (20.2%) / 614 (30.6%) / 220 (25.4%) / 99 (23.7%) / 2,211 (24.8%) / 995,897 (31.8%)
Second quartile / 449 (21.4%) / 71 (26.6%) / 501 (25.0%) / 219 (25.3%) / 87 (20.8%) / 2,135 (23.9%) / 773,254 (24.7%)
Third quartile / 543 (25.9%) / 63 (23.6%) / 475 (23.7%) / 222 (25.6%) / 102 (24.4%) / 2,264 (25.4%) / 728,934 (23.3%)
Upper quartile / 597 (28.5%) / 79 (29.6%) / 416 (20.7%) / 205 (23.7%) / 130 (31.1%) / 2,318 (26.0%) / 631,252 (20.2%)
KID weighted
Lower quartile / 726 (24.4%) / 76 (20.4%) / 863 (30.9%) / 311 (25.5%) / 142 (24.0%) / 3,147 (25.0%) / 2,024,589 (30.9%)
Second quartile / 640 (21.5%) / 98 (26.4%) / 700 (25.0%) / 309 (25.4%) / 124 (20.9%) / 3,021 (24.0%) / 1,623,967 (24.8%)
Third quartile / 769 (25.8%) / 88 (23.7%) / 659 (23.6%) / 311 (25.6%) / 144 (24.3%) / 3,185 (25.3%) / 1,546,507 (23.6%)
Upper quartile / 844 (28.4%) / 110 (29.5%) / 575 (20.6%) / 286 (23.5%) / 183 (30.9%) / 3,257 (25.8%) / 1,349,925 (20.6%)
NIS unweighted
Lower quartile / 1,848 (23.1%) / 53 (21.7%) / 1,305 (28.4%) / 1,259 (26.8%) / 54 (24.1%) / 4,949 (25.5%) / 1,794,987 (30.7%)
Second quartile / 1,866 (23.3%) / 54 (22.1%) / 1,128 (24.5%) / 1,106 (23.5%) / 59 (26.3%) / 4,655 (24.0%) / 1,461,025 (25.0%)
Third quartile / 2,016 (25.2%) / 62 (25.4%) / 1,101 (23.9%) / 1,216 (25.8%) / 59 (26.3%) / 4,847 (25.0%) / 1,380,752 (23.6%)
Upper quartile / 2,272 (28.4%) / 75 (30.7%) / 1,068 (23.2%) / 1,126 (23.9%) / 52 (23.2%) / 4,975 (25.6%) / 1,218,565 (20.8%)
NIS weighted
Lower quartile / 9,240 (23.1%) / 265 (21.7%) / 6,525 (28.4%) / 6,295 (26.8%) / 270 (24.1%) / 24,745 (25.5%) / 8,974,943 (30.7%)
Second quartile / 9,330 (23.3%) / 270 (22.1%) / 5,640 (24.5%) / 5,530 (23.5%) / 295 (26.3%) / 23,275 (24.0%) / 7,305,125 (25.0%)
Third quartile / 10,080 (25.2%) / 310 (25.4%) / 5,505 (23.9%) / 6,080 (25.8%) / 295 (26.3%) / 24,235 (25.0%) / 6,903,759 (23.6%)
Upper quartile / 11,360 (28.4%) / 375 (30.7%) / 5,340 (23.2%) / 5,630 (23.9%) / 260 (23.2%) / 24,875 (25.6%) / 6,092,821 (20.8%)

Legend:KID: Kid’s Inpatient Database. NIS: National Inpatient Survey.

Table e-3 with unweighted and weighted values. Racial distribution of brain surgery. Values are displayed as frequency (percentage).

Brain tumor / Vascular malformation / Traumatic brain injury / Intracranial hemorrhage / Epilepsy surgery / Total brain surgery / Total population
KID unweighted
White / 1,156 (60.0%) / 140 (53.0%) / 1,007 (53.9%) / 386 (48.7%) / 252 (65.1%) / 4,894 (59.1%) / 1,470,720 (50.1%)
Black / 197 (10.2%) / 23 (8.7%) / 267 (14.3%) / 114 (14.4%) / 31 (8.0%) / 953 (11.5%) / 524,260 (17.9%)
Hispanic / 356 (18.5%) / 57 (21.6%) / 406 (21.7%) / 185 (23.4%) / 61 (15.8%) / 1,549 (18.7%) / 630,127 (21.5%)
Other / 217 (11.3%) / 44 (16.7%) / 189 (10.1%) / 107 (13.5%) / 43 (11.1%) / 885 (10.7%) / 308,350 (10.5%)
KID weighted
White / 1,645 (60.1%) / 195 (53.0%) / 1,408 (54.0%) / 544 (48.8%) / 358 (65.5%) / 6,928 (59.2%) / 3,138,004 (51.2%)
Black / 284 (10.4%) / 33 (9.0%) / 377 (14.5%) / 163 (14.6%) / 43 (7.9%) / 1,359 (11.6%) / 1,001,246 (16.4%)
Hispanic / 507 (18.5%) / 80 (21.7%) / 564 (21.6%) / 260 (23.3%) / 87 (15.9%) / 2,185 (18.7%) / 1,290,955 (21.1%)
Other / 302 (11.0%) / 60 (16.3%) / 260 (10.0%) / 147 (13.2%) / 59 (10.8%) / 1,229 (10.5%) / 694,805 (11.3%)
NIS unweighted
White / 5,834 (75.2%) / 147 (61.5%) / 3,055 (69.4%) / 2,892 (63.9%) / 161 (73.9%) / 13,157 (70.3%) / 3,927,957 (69.1%)
Black / 748 (9.6%) / 25 (10.5%) / 503 (11.4%) / 698 (15.4%) / 17 (7.8%) / 2,208 (11.8%) / 822,727 (14.5%)
Hispanic / 561 (7.2%) / 36 (15.1%) / 453 (10.3%) / 471 (10.4%) / 22 (10.1%) / 1,730 (9.2%) / 568,938 (10.0%)
Other / 615 (7.9%) / 31 (13.0%) / 391 (8.9%) / 468 (10.3%) / 18 (8.3%) / 1,632 (8.7%) / 362,111 (6.4%)
NIS weighted
White / 29,170 (75.2%) / 735 (61.5%) / 15,275 (69.4%) / 14,460 (63.9%) / 805 (73.9%) / 65,785 (70.3%) / 19,639,784 (69.1%)
Black / 3,740 (9.6%) / 125 (10.5%) / 2,515 (11.4%) / 3,490 (15.4%) / 85 (7.8%) / 11,040 (11.8%) / 4,113,639 (14.5%)
Hispanic / 2,805 (7.2%) / 180 (15.1%) / 2,265 (10.3%) / 2,355 (10.4%) / 110 (10.1%) / 8,650 (9.2%) / 2,844,692 (10.0%)
Other / 3,075 (7.9%) / 155 (13.0%) / 1,955 (8.9%) / 2,340 (10.3%) / 90 (8.3%) / 8,160 (8.7%) / 1,810,556 (6.4%)

Legend:KID: Kid’s Inpatient Database. NIS: National Inpatient Survey.

Table e-4 with unweighted and weighted values.Gender distribution of brain surgery. Values are displayed as frequency (percentage).

Brain tumor / Vascular malformation / Traumatic brain injury / Intracranial hemorrhage / Epilepsy surgery / Total brain surgery / Total population
KID unweighted
Male / 1,175 (54.9%) / 135 (48.7%) / 1,500 (73.2%) / 526 (59.6%) / 231 (54.5%) / 5,408 (59.2%) / 1,503,170 (47.1%)
Female / 964 (45.1%) / 142 (51.3%) / 548 (26.8%) / 357 (40.4%) / 193 (45.5%) / 3,722 (40.8%) / 1,691,792 (53.0%)
KID weighted
Male / 1,670 (54.9%) / 187 (48.3%) / 2,090 (73.2%) / 740 (59.6%) / 327 (54.5%) / 7,630 (59.2%) / 3,194,495 (47.9%)
Female / 1,370 (45.1%) / 200 (51.7%) / 766 (26.8%) / 501 (40.4%) / 273 (45.5%) / 5,266 (40.8%) / 3,478,334 (52.1%)
NIS unweighted
Male / 4,096 (46.6%) / 164 (50.9%) / 3,678 (69.7%) / 3,046 (60.2%) / 179 (50.4%) / 12,369 (55.3%) / 3,087,268 (42.3%)
Female / 4,690 (53.4%) / 158 (49.1%) / 1,598 (30.3%) / 2,014 (39.8%) / 176 (49.6%) / 9,998 (44.7%) / 4,208,732 (57.7%)
NIS weighted
Male / 20,480 (46.6%) / 820 (50.9%) / 18,390 (69.7%) / 15,230 (60.2%) / 895 (50.4%) / 61,845 (55.3%) / 15,436,318 (42.3%)
Female / 23,450 (53.4%) / 790 (49.1%) / 7,990 (30.3%) / 10,070 (39.8%) / 880 (49.6%) / 49,990 (44.7%) / 21,043,663 (57.7%)

Legend:KID: Kid’s Inpatient Database. NIS: National Inpatient Sample.