Skip to main content

Table 1 Baseline variables of patients before and after matching

From: Comparison of radiological and clinical outcomes, complications, and implant removals in anatomically pre-contoured clavicle plates versus reconstruction plates – a propensity score matched retrospective cohort study of 106 patients

 

Before Matching

After Matching

ALCP (n = 59)

RLCP (n = 55)

Std Mean Diffa

p value*

ALCP (n = 53)

RLCP (n = 53)

Std Mean Diffa

p value*

Mean Age (Mean, (range))

41.4

(16–71)

42.5

(18–84)

0.068

0.779

40.7

(16–71)

42.1

(18–77)

0.091

0.620

Males

80%

(47)

78%

43

−0.036

0.847

79%

(42)

77%

(41)

−0.045

0.815

Lateral 2/5 shaft fractures

19%

(11)

13%

(7)

−0.162

0.389

13%

(7)

13%

(7)

0.000

1.000

AO Type 15.2 B/C: Wedge or comminuted fractures

64%

(38)

71%

(39)

0.138

0.461

64%

(34)

70%

(37)

0.119

0.537

High energy injury

58%

(34)

55%

(30)

−0.062

0.741

53%

(28)

55%

(29)

0.037

0.846

Operated by specialist with experience above 6 yearsb

92%

(54)

93%

(51)

0.044

0.813

91%

(48)

92%

(49)

0.067

0.729

Concomitant fracturesb

12%

(7)

18%

(10)

0.177

0.346

11%

(6)

17%

(9)

0.162

0.405

Open fractureb

0%

(0)

1.8%

(1)

0.270

0.300

0%

(0)

1.8%

(1)

0.275

0.317

ASA 1/2/3b

(36/19/4)

(30/21/4)

 

0.512

(33/17/3)

(29/21/3)

 

0.467

  1. aStd. Mean difference = Mean difference / Mean standard deviation
  2. bFactors not included in PSM
  3. *Mann-Whitney test