Table 1 Odds ratio for quality of sleep during lockdown by sociodemographic characteristics, work-related factors, changes in lifestyle and psychological distress. Total Poor Sleep Good Sleep Missing n % n % n % n % 1826 100 721 39.5 1026 56.2 79 4.3 OR 95% CI p-Value Lower Upper Sociodemographic characteristics Sex Female 1397 76.5 601 43.0 732 52.4 64 4.6 1.00 Male 423 23.2 119 28.1 293 69.3 11 2.6 0.47 0.29 0.76 0.002 Missing 6 0.3 1 16.7 1 16.7 4 66.7 Age 18-44 818 44.8 327 40.0 467 57.1 24 2.9 1.00 45-64 802 43.9 336 41.9 438 54.6 28 3.5 0.95 0.67 1.34 0.771 >65 194 10.6 55 28.4 118 60.8 21 10.8 0.54 0.26 1.11 0.092 Missing 12 0.7 3 25.0 3 25.0 6 50.0 Education level Low 94 5.1 38 40.4 50 53.2 6 6.4 1.00 Medium 805 44.1 329 40.9 432 53.7 44 5.5 0.55 0.30 1.03 0.066 High 889 48.7 338 38.0 527 59.3 24 2.7 0.44 0.23 0.81 0.009 Missing 38 2.1 16 42.1 17 44.7 5 13.2 Household Alone 208 11.4 77 37.0 129 62.0 2 1.0 1.00 ≥1 person 1618 88.6 644 39.8 897 55.4 77 4.8 1.06 0.62 1.79 0.834 Financial problems No problems 1320 72.3 464 35.2 794 60.2 62 4.7 1.00 Some problems 399 21.9 204 51.1 187 46.9 8 2.0 1.86 1.27 2.72 0.001 Many problems 38 2.1 23 60.5 15 39.5 0 0.0 7.27 3.59 14.73 <0.001 Missing 69 3.8 30 43.5 30 43.5 9 13.0 Occupational status during lockdown Continue working 1275 69.8 495 38.8 726 56.9 54 4.2 1.00 Activity stopped 181 9.9 82 45.3 96 53.0 3 1.7 1.33 0.80 2.21 0.266 Retir. Stud. Housew. 240 13.1 86 35.8 143 59.6 11 4.6 0.73 0.42 1.29 0.288 Unemployed 55 3.0 28 50.9 25 45.5 2 3.6 1.09 0.42 2.81 0.848 Missing 75 4.1 30 40.0 36 48.0 9 12.0 Changes in lifestyle Change in sleep habits Unchanged 701 38.4 645 92.0 24 3.4 34 4.9 1.00 Changed 981 53.7 842 85.8 121 12.3 17 1.7 3.86 2.46 6.05 <0.001 Uncertain 80 4.4 67 83.8 3 3.8 10 12.5 1.20 0.35 4.10 0.760 Missing 64 3.5 21 32.8 25 39.1 18 28.1 Change in physical activity habits Unchanged 972 53.2 349 35.9 596 61.3 27 3 1.00 Improved 97 5.3 37 38.1 56 57.7 4 4.1 0.59 0.21 1.68 0.330 Worsen 641 35.1 288 44.9 334 52.1 19 3.0 1.68 1.18 2.40 0.004 Missing 116 6.4 47 40.5 40 34.5 29 25.0 Change in eating habits Unchanged 530 29.0 152 28.7 361 68.1 17 3.2 1.00 Improved 612 33.5 237 38.7 361 59.0 14 2.3 1.49 0.89 2.51 0.125 Worsen 321 17.6 171 53.3 128 39.9 22 6.9 4.19 2.51 6.96 <0.001 Mixed behav. 337 18.5 156 46.3 164 48.7 17 5.0 2.41 1.40 4.15 0.001 Missing 26 1.4 5 19.2 12 46.2 9 34.6 Change in alcohol consumption Unchanged 1275 69.8 496 38.9 726 56.9 53 4.2 1.00 Decreased 231 12.7 90 39.0 138 59.7 3 1.3 0.73 0.41 1.28 0.280 Increased 229 12.5 107 46.7 112 48.9 10 4.4 1.34 0.84 2.13 0.209 Missing 91 5.0 28 30.8 50 54.9 13 14.3 Change in smoking habits Unchanged 1327 72.7 519 39.1 780 58.8 28 2.1 1.00 Decreased 75 4.1 33 44.0 40 53.3 2 2.7 0.79 0.31 2.01 0.628 Increased 140 7.7 64 45.7 67 47.9 9 6.4 1.39 0.78 2.47 0.251 Missing 284 15.6 105 37.0 139 48.9 40 14.1 Psychological distress Tension No 1337 73.2 452 33.8 838 62.7 47 3.5 1.00 Yes 359 19.7 232 64.6 107 29.8 20 5.6 3.88 2.74 5.52 <0.001 Missing 130 7.1 37 28.5 81 62.3 12 9.2 Upset No 1284 70.3 444 34.6 804 62.6 36 2.8 1.00 Yes 372 20.4 230 61.8 135 36.3 7 1.9 3.26 2.29 4.64 <0.001 Missing 170 9.3 47 27.6 87 51.2 36 21.2 Worry No 914 50.1 271 29.6 614 67.2 29 3.2 1.00 Yes 810 44.4 421 52.0 366 45.2 23 2.8 2.50 1.75 3.58 <0.001 Missing 102 5.6 29 28.4 46 45.1 27 26.5 Fear No 1404 76.9 501 35.7 847 60.3 56 4.0 1.00 Yes 303 16.6 180 59.4 116 38.3 7 2.3 2.74 1.89 3.97 <0.001 Missing 119 6.5 40 33.6 63 52.9 16 13.4 Loneliness No 1439 78.8 524 36.4 869 60.4 46 3.2 1.00 Yes 249 13.6 151 60.6 94 37.8 4 1.6 3.27 2.23 4.79 <0.001 Missing 138 7.6 46 33.3 63 45.7 29 21.0 Uncertainty No 778 42.6 239 30.7 499 64.1 40 5.1 1.00 Yes 996 54.5 468 47.0 499 50.1 29 2.9 2.89 1.93 4.31 <0.001 Missing 52 2.8 14 26.9 28 53.8 10 19.2 Legend: OR = Odds ratio; CI = Confidence Interval; Retir. = retired; Stud. = student; Housew. = housewife; behav. = behaviour Note: OR and CI were not calculated for missing values.