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Table 1 Characteristics of nurses before and after PSM by depressive symptoms in this study during the COVID-19 outbreak

From: The prevalence and risk factors for depressive symptoms in frontline nurses under COVID-19 pandemic based on a large cross-sectional study using the propensity score-matched method

Variables

Before PSM

562 (100%) nurses

After PSM

498 (100%) nurses

Depressive symptoms (yes)

286 (50.90)

1:1 PSM

Demographic characteristics

 Age (years)

35.00 (34.00, 36.00)

35.00 (34.00, 36.00)

 Sex (male vs.female)

118 (21.00)/444 (79.00)

100 (20.10)/398 (79.90)

 BMI (kg/m2)

21.90 (19.80, 24.23)

22.00 (19.97, 24.22)

Dietary habits

 Smoking habit (current yes)

8 (1.40)

4 (0.80)

 Alcohol habit (current yes)

293 (52.10)

254 (51.00)

 Coffee habit (current yes)

430 (76.50)

380 (76.30)

Life related factors

 Sleep quality (PSQI scores)

6.00 (4.00, 7.00)

6.00 (4.00, 7.00)

 Physical activity (IPAQ Mets×hour/week)

9.90 (6.60, 23.73)

9.90 (6.60, 23.21)

 Have religions (yes)

25 (4.40)

21 (4.20)

Marital status

 Single/divorce/separation/widow

232 (41.30)

213 (42.80)

 Married/cohabitation

330 (58.70)

285 (57.20)

 Have siblings (yes)

268 (47.70)

229 (46.00)

Household income (Yuan/month)

  < 5000

33 (5.90)

27 (5.40)

5000, < 10,000

121 (21.50)

111 (22.30)

10,000

408 (72.60)

360 (72.30)

Experienced major life events (yes)

180 (32.00)

162 (32.50)

Visiting friend constantly (yes)

259 (46.10)

231 (46.40)

Work related factors

 Years of service

   ≤ 5 years

158 (28.10)

146 (29.30)

  5 years < and ≤ 10 years

239 (42.50)

216 (43.40)

   > 10 years

165 (29.40)

136 (27.30)

Speciality

 Surgery

68 (12.10)

60 (12.00)

 Internal medicine

159 (28.20)

143 (28.70)

 Obstetrics and Gynecology

61 (10.90)

54 (10.80)

 Pediatrics

64 (11.40)

56 (11.20)

 Others

210 (37.40)

185 (37.10)

Working duration (hours/week)

 40–60 h

409 (72.80)

357 (71.70)

  < 40 h

18 (3.20)

14 (2.80)

  > 60 h

135 (24.00)

127 (25.50)

  Night shifts (times/month)

1.00 (1.00, 4.00)

1.00 (1.00, 4.00)

Psychological characteristics

 POS (scores)

42.00 (36.00, 52.00)

42.00 (36.00, 52.00)

 PsyCap-efficacy (scores)

25.00 (22.00, 29.00)

25.00 (22.00, 29.00)

 PsyCap-hope (scores)

25.00 (22.00, 29.00)

25.00 (22.00, 29.00)

 PsyCap-resiliency (scores)

26.00 (23.00, 29.00)

26.00 (23.00, 29.00)

 PsyCap-optimism (scores)

25.00 (22.00, 28.00)

25.00 (22.00, 28.00)

  1. Continuous variables were reported median (interquartile range), categorical variables were reported as number (percentage)
  2. Abbreviations: COVID-19 coronavirus disease 2019, PSM propensity score matching, BMI body mass index, PSQI, Pittsburgh sleep quality index, IPAQ International Physical Activity Questionnaires, POS Perceived Organization Support, PsyCap Psychological Capital