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Table 2 Sociodemographic characteristics of knee osteoarthritis and knee meniscal and ligament injury patients

From: Analysis of medical service use of knee osteoarthritis and knee meniscal and ligament injuries in Korea: a cross-sectional study of national patient sample data

Characteristics Total Inpatient Outpatient
Knee OA Knee meniscal and ligament injury Knee OA Knee meniscal and ligament injury Knee OA Knee meniscal and ligament injury
N = 48,321 % N = 19,136 % N = 3084 % N = 2434 % N = 48,000 % N = 18,540 %
Age (years) < 20 243 0.50 4290 22.42 1 0.03 272 11.18 242 0.50 4252 22.93
20~29 457 0.95 2665 13.93 11 0.36 411 16.89 450 0.94 2592 13.98
30~39 890 1.84 2488 13.00 38 1.23 359 14.75 877 1.83 2415 13.03
40~49 3812 7.89 3131 16.36 199 6.45 470 19.31 3758 7.83 3032 16.35
50~59 12,856 26.61 3542 18.51 772 25.03 539 22.14 12,736 26.53 3387 18.27
60~69 14,790 30.61 1865 9.75 960 31.13 251 10.31 14,729 30.69 1777 9.58
≥ 70 15,273 31.61 1155 6.04 1103 35.77 132 5.42 15,208 31.68 1085 5.85
Sex Male 13,141 27.20 10,445 54.58 546 17.70 1438 59.08 13,054 27.20 10,171 54.86
Female 35,180 72.80 8691 45.42 2538 82.30 996 40.92 34,946 72.80 8369 45.14
Insurance typea NHI 45,183 93.51 18,483 96.59 2853 92.51 2356 96.80 44,879 93.50 17,912 96.61
MD 3234 6.69 651 3.40 230 7.46 74 3.04 3215 6.70 625 3.37
VH 135 0.28 21 0.11 11 0.36 6 0.25 133 0.28 19 0.10
Medical institution typeb Clinic 36,731 76.01 13,343 69.73 592 19.20 590 24.24 36,570 76.19 13,115 70.74
Hospital 12,925 26.75 4814 25.16 1816 58.88 1263 51.89 12,616 26.28 4452 24.01
GH 5371 11.12 2053 10.73 646 20.95 569 23.38 5251 10.94 1872 10.10
TH 1801 3.73 437 2.28 243 7.88 129 5.30 1774 3.70 408 2.20
LCH 621 1.29 85 0.44 176 5.71 25 1.03 457 0.95 65 0.35
PHC 407 0.84 21 0.11 2 0.06 407 0.85 21 0.11
KMH 126 0.26 59 0.31 80 2.59 34 1.40 50 0.10 26 0.14
Medical specialtyc OS 43,654 90.34 17,056 89.13 2852 92.48 2304 94.66 43,379 90.37 16,486 88.92
AN 3108 6.43 300 1.57 32 1.04 11 0.45 3083 6.42 293 1.58
GS 2350 4.86 588 3.07 91 2.95 56 2.30 2281 4.75 554 2.99
NS 1957 4.05 493 2.58 76 2.46 27 1.11 1899 3.96 470 2.54
IM 1888 3.91 428 2.24 50 1.62 23 0.94 1846 3.85 410 2.21
RM 1532 3.17 354 1.85 166 5.38 53 2.18 1408 2.93 323 1.74
FM 1656 3.43 220 1.15 110 3.57 26 1.07 1563 3.26 195 1.05
RD 258 0.53 295 1.54 1 0.03 1 0.04     
ER 101 0.21 451 2.36 1 0.03 4 0.16     
GP 326 0.67 19 0.10 1 0.03 1 0.04     
Otherd 470 0.97 93 0.49         
  1. OA Osteoarthritis
  2. aNHI, National Health Insurance; MD, Medicaid; VH, Veteran Healthcare
  3. bGH, General Hospital; TH, Tertiary Hospital; LCH, Long-term Care Hospital; PHC, Public Health Center; KMH, Korean Medicine Hospital
  4. cOS, Orthopedic surgery; AN, Anesthesiology; GS, General Surgery; NS, Neurosurgery; IM, Internal Medicine; RM, Rehabilitation Medicine; FM, Family Medicine; RD, Radiology; EM, Emergency Medicine; GP, General Physician
  5. dIncluding Neurology, Thoracic and Cardiovascular Surgery, Pediatrics, Obstetrics and Gynecology, Urology, and Neuropsychiatry