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Table 1 Characteristics and sleep quality of nurses in the emergency department in public hospitals in Shandong, China

From: Sleep quality of nurses in the emergency department of public hospitals in China and its influencing factors: a cross-sectional study

 TotalIn primary hospitalsIn secondary hospitalsIn tertiary hospitalsP
Number of subjects473033491044337 
Age35.3 ± 6.835.9 ± 6.534.6 ± 7.132.5 ± 7.4< 0.001
Sex    0.082
 Male545 (11.5%)365 (10.9%)132 (12.6%)48 (14.2%) 
 Female4185 (88.5%)2984 (89.1%)912 (87.4%)289 (85.8%) 
Marital status    0.560
 Never married677 (14.3%)472 (14.1%)153 (14.7%)52 (15.4%) 
 Married/cohabiting3427 (72.5%)2446 (73.0%)748 (71.6%)233 (69.1%) 
Divorced/separated/widowed626 (13.2%)431 (12.9%)143 (13.7%)52 (15.4%) 
Tea/coffee consumption   0.975
 Never/almost never2091 (44.2%)1475 (44.0%)462 (44.3%)154 (45.7%) 
 Sometimes1088 (23.0%)779 (23.3%)238 (22.8%)71 (21.1%) 
 Often886 (18.7%)639 (19.1%)188 (18.0%)59 (17.5%) 
 Daily/almost daily665 (14.1%)456 (13.6%)156 (14.9%)53 (15.7%) 
BMI    0.115
 < 18.5373 (7.9%)269 (8.0%)79 (7.6%)25 (7.4%) 
 18.5 ~ 23.92413 (51.0%)1668 (49.8%)551 (52.8%)194 (57.6%) 
 24.0 ~ 27.91168 (24.7%)851 (25.4%)249 (23.9%)68 (20.2%) 
≥ 28.0776 (16.4%)561 (16.8%)165 (15.8%)50 (14.8%) 
Exercise in leisure time   0.007
 Never/almost never2677 (56.6%)1852 (55.3%)615 (58.9%)210 (62.3%) 
 Sometimes1194 (25.2%)863 (25.8%)253 (24.2%)78 (23.1%) 
 Often859 (18.2%)634 (18.9%)176 (16.9%)49 (14.5%) 
Personal income per month   0.001
  < Ұ40001393 (29.5%)1026 (30.6%)289 (27.7%)78 (23.1%) 
 Ұ4000-1442 (30.5%)1029 (30.7%)313 (30.0%)100 (29.7%) 
 Ұ6000-1259 (26.6%)864 (25.8%)293 (28.1%)102 (30.3%) 
 Ұ8000-439 (9.3%)298 (8.9%)102 (9.8%)39 (11.6%) 
Ұ10,000-197 (4.2%)132 (3.9%)47 (4.5%)18 (5.3%) 
Smoking    0.975
 Never smoked4077 (86.2%)2893 (86.4%)896 (85.8%)288 (85.5%) 
 Ex-smoker332 (7.0%)231 (6.9%)75 (7.2%)26 (7.7%) 
 Current smoker321 (6.8%)225 (6.7%)73 (7.0%)23 (6.8%) 
Educational level    < 0.001
 Lower than junior college1854 (39.2%)1352 (40.4%)389 (37.3%)113 (33.5%) 
 Junior college2297 (48.6%)1633 (48.8%)512 (49.0%)152 (45.1%) 
 Bachelor506 (10.7%)329 (9.8%)121 (11.6%)56 (16.6%) 
Master or above73 (1.5%)35 (1.0%)22 (2.1%)16 (4.7%) 
Children in household   < 0.001
  =0441 (9.3%)276 (8.2%)112 (10.7%)53 (15.7%) 
  = 13139 (66.4%)2194 (65.5%)719 (68.9%)226 (67.1%) 
  = 21120 (23.7%)856 (25.6%)208 (19.9%)56 (16.6%) 
  > 230 (0.6%)23 (0.7%)5 (0.5%)2 (0.6%) 
Professional rank    < 0.001
 Registered1294 (27.4%)952 (28.4%)276 (26.4%)66 (19.6%) 
 Primary2450 (51.8%)1856 (55.4%)459 (44.0%)135 (40.1%) 
 Intermediate720 (15.2%)382 (11.4%)235 (22.5%)103 (30.6%) 
 Senior/deputy senior266 (5.6%)159 (4.7%)74 (7.1%)33 (9.8%) 
 Years of service11.2 ± 6.512.1 ± 5.89.4 ± 6.77.1 ± 8.7< 0.001
Night shift frequency per month   0.006
 Never515 (10.9%)359 (10.7%)121 (11.6%)35 (10.4%) 
 1–31179 (24.9%)856 (25.6%)246 (23.6%)77 (22.8%) 
 4–61799 (38.0%)1325 (39.6%)365 (35.0%)109 (32.3%) 
  ≥ 71237 (26.2%)809 (24.2%)312 (29.9%)116 (34.4%) 
Workload
 Work hours per week   < 0.001
  < 401331 (28.1%)1021 (30.5%)249 (23.9%)61 (18.1%) 
 40–452157 (45.6%)1530 (45.7%)476 (45.6%)151 (44.8%) 
  > 451242 (26.3%)798 (23.8%)319 (30.6%)125 (37.1%) 
Number of patients in the charge of at night  < 0.001
  < 30996 (21.1%)765 (22.8%)186 (17.8%)45 (13.4%) 
 30–602028 (42.9%)1405 (42.0%)466 (44.6%)157 (46.6%) 
  > 601706 (36.1%)1179 (35.2%)392 (37.5%)135 (40.1%) 
Number of patients in the charge of in the daytime  < 0.001
  < 301325 (28.0%)1009 (30.1%)253 (24.2%)63 (18.7%) 
 30–601753 (37.1%)1211 (36.2%)405 (38.8%)137 (40.7%) 
  > 601652 (34.9%)1129 (33.7%)386 (37.0%)137 (40.7%) 
Employment status    0.101
 Permanent2727 (57.7%)1961 (58.6%)586 (56.1%)180 (53.4%) 
 Temporary/contract2003 (42.3%)1388 (41.4%)458 (43.9%)157 (46.6%) 
Sleep quality
 PSQI8.2 ± 3.97.4 ± 3.59.5 ± 3.911.8 ± 4.3< 0.001
 PSQI> 53114 (65.8%)2132 (63.7%)725 (69.4%)257 (76.3%)< 0.001
 PSQI> 82905 (61.4%)1998 (59.7%)675 (64.7%)232 (68.8%)< 0.001