Is burnout a mediating factor between sharps injury and work-related factors or musculoskeletal pain?

Table 1 Descriptive statistics concerning the results of the Copenhagen burn inventory and occurrence of sharps injuries (n = 1734)

Characters	n	PB score	WB score	SI
		mean ± SD	mean ± SD	Subject (%)
SI in past one year	1734	36.69 ± 17.59	34.19 ± 16.29	146 (8.42)
PB ranks				1,b
> Q3	542	56.93 ± 12.20	-	68 (12.55)
> Q2 and ≤ Q3	482	37.22 ± 3.31	-	30 (6.22)
> Q1 and ≤ Q2	394	27.08 ± 2.09	-	29 (7.36)
≤ Q1	316	13.12 ± 6.79	-	19 (6.01)
WB ranks				1,b
> Q3	451	-	54.66 ± 9.45	56 (12.42)
> Q2 and ≤ Q3	572	-	36.70 ± 4.03	39 (6.82)
> Q1 and ≤ Q2	344	-	26.61 ± 1.78	25 (7.27)
≤ Q1	367	-	12.20 ± 7.27	26 (7.08)
Sex		b	b	2,b
Male	325	33.64 ± 16.48	31.13 ± 15.28	45 (13.85)
Female	1409	37.39 ± 17.77	34.89 ± 16.44	101 (7.17)
WE ranks		b	b	1,b
≤ Q1	375	36.23 ± 17.73	34.72 ± 17.37	34 (9.07)
> Q1 and ≤ Q2	434	37.29 ± 17.98	35.12 ± 16.10	53 (12.21)
> Q2 and ≤ Q3	487	38.94 ± 17.60	35.48 ± 16.06	38 (7.80)
> Q3	438	34.07 ± 16.73c	31.36 ± 15.46	21 (4.79)
Occupation groups		c	c	1,b
Doctors	145	37.10 ± 17.37	34.11 ± 16.78	23 (15.86)
Nurses	627	41.22 ± 17.27	39.33 ± 15.55	55 (8.77)
Others	962	33.67 ± 17.20	30.84 ± 15.82c	68 (7.07)
Right-handed
Yes	1663	36.89 ± 17.64	34.31 ± 16.31	142 (8.54)
No	71	31.87 ± 15.62	31.34 ± 15.48	4 (5.63)
Drinking in past month		c	b	2,b
Yes	561	39.51 ± 17.05	36.17 ± 16.03	64 (11.41)
No	1173	35.34 ± 17.69	33.24 ± 16.33	82 (6.99)
Smoking in past month
Yes	12	31.60 ± 16.80	25.89 ± 17.04	2 (16.67)
No	1722	36.72 ± 17.60	34.24 ± 16.27	144 (8.36)
SLD (per day) ranks		c	c	1,a
≤ 5 h	62	48.52 ± 20.62	41.82 ± 17.57	9 (14.52)
> 5 and ≤ 6 h	566	41.04 ± 17.91	38.26 ± 16.47	54 (9.54)
> 6 and ≤ 7 h	771	34.91 ± 16.38	32.35 ± 15.40	66 (8.56)
> 7 h	335	31.23 ± 16.47	29.89 ± 15.80	17 (5.07)
Exercise per day		b	c
Yes	133	31.27 ± 18.88	28.84 ± 17.87	11 (8.27)
No	1601	37.14 ± 17.41	34.63 ± 16.08	135 (8.43)
Suffering chronic disease		b	a	2,a
Yes	608	38.69 ± 17.95	35.43 ± 16.70	64 (10.53)
No	1126	35.61 ± 17.31	33.51 ± 16.02	82 (7.28)
OT work ranks		c	c	1,b
> 45 h / mo	53	48.51 ± 19.78	43.73 ± 18.34	9 (16.98)
< 45 h / m	481	41.32 ± 17.21	39.27 ± 15.82	58 (12.06)
Seldom	1200	34.31 ± 17.07c	31.73 ± 15.75	79 (6.58)
Work schedule classes		c	c	1,b
Irregular shift	223	43.54 ± 18.63	40.90 ± 16.91	30 (13.45)
Regular shift	204	37.89 ± 17.15	35.19 ± 15.19	25 (12.25)
Night	204	37.77 ± 18.14	37.45 ± 16.26	17 (8.33)
Day	1103	34.88 ± 16.99	32.04 ± 15.89	74 (6.71)

¹Chi-square test.

²Fisher exact test.

^aP < 0.05.

^bP < 0.01.

^cP < 0.0001. OT: Over time; PB: Personal burnout; SD: Standard deviation; SI: Sharp injuries; SLD: Sleep duration; WB: Work-related burnout.