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. 2023 Mar 23;11(4):721. doi: 10.3390/vaccines11040721

Table 1.

Students’ sociodemographic characteristics, overall and by survey period. Results are expressed as mean (standard deviation, SD), median (interquartile range, IQR), or frequency (percentage, %). COVID-19: coronavirus disease 2019.

Total September–
October 2021
November–
December 2021
January–
February 2022
N = 5287 N = 1240 N = 2961 N = 1086
Age, years
  Mean (SD) 23.9 (4.5) 24.5 (5.2) 23.4 (4.0) 24.6 (4.5)
  Median (IQR) 23.1 (21.2–25.2) 23.2 (21.5–25.8) 22.7 (21.0–24.6) 23.8 (21.8–26.1)
Gender, N (%)
  Female 3580 (67.7) 823 (66.4) 2015 (68.1) 742 (68.3)
  Male 1707 (32.3) 417 (33.6) 946 (31.9) 344 (31.7)
Nationality, N (%)
  Italian 4632 (87.6) 1036 (83.5) 2651 (89.5) 945 (87.0)
  Non-Italian 655 (12.4) 204 (16.5) 310 (10.5) 141 (13.0)
Area of study, N (%)
  Healthcare 1994 (37.7) 463 (37.3) 1152 (38.9) 379 (34.9)
  Science & Technology 1628 (30.8) 315 (25.4) 960 (32.4) 353 (32.5)
  Social Sciences & Humanities 1665 (31.5) 462 (37.3) 849 (28.7) 354 (32.6)
Year of study, N (%)
  First or second 3288 (62.2) 719 (58.0) 1833 (61.9) 736 (67.8)
  Third or above 1999 (37.8) 521 (42.0) 1128 (38.1) 350 (32.2)
Finances, N (%)
  Many difficulties 237 (4.5) 69 (5.6) 126 (4.3) 42 (3.9)
  Some difficulties 1339 (25.3) 343 (27.7) 706 (23.8) 290 (26.7)
  Managing well enough 2753 (52.1) 615 (49.6) 1565 (52.9) 573 (52.8)
  Managing very well 958 (18.1) 213 (17.2) 564 (19.0) 181 (16.7)
Previous COVID-19 infection, N (%)
  No infection 4709 (89.1) 1113 (89.8) 2702 (91.3) 894 (82.3)
  Asymptomatic or mild symptoms 501 (9.5) 112 (9.0) 227 (7.7) 162 (14.9)
  Moderate or severe symptoms 77 (1.5) 15 (1.2) 32 (1.1) 30 (2.8)