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Table 2 Demographic data of the patients and comparison of clinical characteristics between the non-survivors and survivors

From: The Surgical Apgar Score can help predict postoperative complications in femoral neck fracture patients: a 6-year retrospective cohort study

 

All the patients (N = 506)

Non-survivors (N = 17)

Survivors (N = 489)

p value

Age (year)

87 ± 6 (70–102)

88 ± 7 (74–99)

87 ± 6 (70–102)

0.403

Male

94 (18.6)

4 (23.5)

90 (18.4)

0.593

Body mass index

20.4 ± 3.2 (13.7–32.0)

18.9 ± 4.1 (14.2–30.8)

20.5 ± 3.2 (13.7–32.0)

0.018

Comorbidities

 Hypertension

283 (55.9)

9 (52.9)

274 (56.0)

0.801

 Old cerebral infarction

63 (12.5)

4 (23.5)

59 (12.1)

0.159

 Chronic heart failure

61 (12.1)

2 (11.8)

59 (12.1)

0.970

 Diabetes mellitus

58 (9.6)

3 (17.6)

55 (11.2)

0.416

 Chronic renal failure

21 (4.2)

1 (5.9)

20 (4.1)

0.716

 Chronic obstructive pulmonary disease

20 (4.0)

2 (11.8)

18 (3.7)

0.093

 Rheumatoid arthritis

18 (3.6)

2 (11.8)

16 (3.3)

0.063

 Old myocardial infarction

15 (3.0)

1 (5.9)

14 (2.9)

0.471

 Insertion of cardiac pacemaker

9 (2.9)

0 (0)

9 (1.8)

0.573

Hemoglobin (g/dl)

11.1 ± 1.8 (6.1–16.8)

10.4 ± 2.2 (6.6–15.6)

11.2 ± 1.8 (6.1–16.8)

0.114

C-reactive protein (mg/dl)

2.6 ± 3.5 (0.0–24.3)

2.7 ± 3.3 (0.0–12.5)

2.6 ± 3.5 (0.0–24.3)

0.653

Albumin concentration (g/dl)

3.5 ± 0.5 (2.1–4.6)

3.2 ± 0.5 (2.2–4.0)

3.5 ± 0.5 (2.1–4.6)

0.006

Sodium concentration (mEq/L)

139 ± 4 (120–162)

140 ± 5 (131–147)

139 ± 4 (120–162)

0.391

Blood urea nitrogen/creatinine ratio

26.7 ± 9.1 (7.8–83.2)

29.0 ± 12.4 (10.4–56.3)

26.7 ± 8.9 (7.8–83.2)

0.601

ASA classification ≥ 3

249 (49.2%)

15 (88.2%)

234 (47.8%)

0.001

Ejection fraction (%)

64 ± 9 (39–89)

63 ± 10 (45–80)

64 ± 9 (39–89)

0.441

Moderate to severe valvular heart disease

91 (18.0)

7 (41.2)

84 (17.2)

0.011

PaO2 (mmHg)

76 ± 11 (45–104)

78 ± 10 (60–97)

76 ± 12 (45–104)

0.365

Dementia

244 (48.2)

10 (58.8)

234 (47.8)

0.374

Waiting period for surgery(day)

9.0 ± 3.3 (2–20)

9.5 ± 4.0(5–18)

9.0 ± 3.3(2–20)

0.922

Preoperative fever (≥ 38°)

151 (29.8%)

8 (47.1%)

143 (29.2%)

0.110

General anesthesia

376 (74.3)

11 (64.7)

365 (74.6)

0.357

Spinal anesthesia

130 (25.7)

6 (35.3)

124 (25.4)

Hip hemiarthroplasty

101 (20)

5 (29.4)

96 (19.6)

0.321

Osteosynthesis

405 (80)

12 (70.6)

393 (80.4)

Operation time (min)

47 ± 25 (13–190)

47 ± 24 (18–104)

47 ± 25 (13–190)

0.952

  1. The data are given as patient’s number (%) or the mean ± standard deviation (range)
  2. PaO2 partial pressure of oxygen in arterial blood gas analysis