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Table 1 Propensity score-matched baseline characteristics of total study population between treated and non-treated patients

From: Adherence to anti-osteoporosis medication associated with lower mortality following hip fracture in older adults: a nationwide propensity score-matched cohort study

Variables Total Treated (n = 2092) Non-treated(n = 2092) p-value
Age, mean (S.D.), years 79.1 (7.1) 79.2 (7.0) 79.0 (7.2) 0.3331
Gender, n (%)     0.6212
 Male 875 (20.9) 444 (21.2) 431 (20.6)  
 Female 3309 (79.1) 1648 (78.8) 1661 (79.4)  
Location, n (%)     0.8364
 North 1326 (31.7) 655 (31.3) 671 (32.1)  
 Middle 1314 (31.4) 661 (31.6) 653 (31.2)  
 Southern 1380 (33.0) 689 (32.9) 691 (33.0)  
 East 164 (3.9) 87 (4.2) 77 (3.7)  
Urbanization level, n (%)     0.8062
 Metropolitan areas 1296 (31.0) 639 (30.5) 657 (31.4)  
 Satellite cities or towns 884 (21.1) 448 (21.4) 436 (20.8)  
 Rural areas 2004 (47.9) 1005 (48.1) 999 (47.6)  
Charlson comorbidity index, n (%)     0.0716
 0 899 (21.5) 419 (20.0) 480 (22.9)  
 1 1034 (24.7) 526 (25.1) 508 (24.3)  
  ≥ 2 2251 (53.8) 1147 (54.8) 1104 (52.8)  
Comorbidity, n (%)
 Diabetes 1319 (31.5) 672 (32.1) 647 (30.9) 0.4055
 Hypertension 2486 (59.4) 1249 (59.7) 1237 (59.1) 0.7056
 Cerebrovascular disease 1111 (26.6) 565 (27.0) 546 (26.1) 0.506
 Heart disease 1042 (24.9) 531 (25.4) 511 (24.4) 0.4746
 Cancer 86 (2.1) 45 (2.2) 41 (2.0) 0.663
 Chronic liver disease 261 (6.2) 147 (7.0) 114 (5.5) 0.0349
 Chronic obstructive pulmonary disease 792 (18.9) 398 (19.0) 394 (18.8) 0.8746
 Chronic kidney disease 370 (8.8) 188 (9.0) 182 (8.7) 0.7439
 Hyperlipidemia 581 (13.9) 301 (14.4) 280 (13.4) 0.3478
Type of hip fracture, n (%)     0.0005
 Neck (ICD9: 820.00, 820.01, 820.03, 820.8) 1964 (50.2) 975 (49.0) 989 (51.6)  
 Cervical (ICD9: 820.0, 820.02, 820.09) 417 (10.7) 186 (9.3) 231 (12.0)  
 Trochanteric (ICD9: 820.2, 820.20, 820.21) 1529 (39.1) 831 (41.7) 698 (36.4)  
Type of operation, n (%)     0.0078
 Open reduction with internal fixation (ICD 9: 79.35 1230 (60.5) 608 (60.0) 622 (61.0)  
 Open reduction without internal fixation (ICD9: 79.25) 8 (0.4) 4 (0.4) 4 (0.4)  
 Closed reduction with internal fixation (ICD 9: 79.15) 101 (5.0) 67 (6.6) 34 (3.3)  
 Partial hip replacement (ICD-9: 81.52) 694 (34.1) 334 (33.0) 360 (35.3)  
Type of treatment, n (%)     0.8286
 Not operated 2151 (51.4) 1079 (51.6) 1072 (51.2)  
 Operated 2033 (48.6) 1013 (48.4) 1020 (48.8)  
Prescribed by medical specialty, n (%)     0.6085
 Orthopedics 2634 (63.0) 1309 (62.6) 1325 (63.3)  
 Non-Orthopedics 1550 (37.1) 783 (37.4) 767 (36.7)