Table 1

Characteristics of cases of COVID-19 according to their outcomes, in older adults in Quebec, Canada, during the first and second waves (23 February 2020 to 15 March 2021)

CharacteristicsAll cases (N=32 476)Outcomes of COVID-19 infection*
Cases not hospitalised, not dead (N=20 973)Cases hospitalised (N=10 350)Cases dead (N=4146)
Age (year) mean±SD79.59±8.8778.31±8.8181.38±8.4084.73±8.18
Age group (year)—no (%)
 66–695207 (16.03)4199 (20.02)974 (9.41)171 (4.12)
 70–746096 (18.77)4478 (21.35)1562 (15.09)395 (9.53)
 75–595470 (16.84)3493 (16.65)1870 (18.07)556 (13.41)
 80+15 703 (48.35)8803 (41.97)5944 (57.43)3024 (72.94)
Sex—no (%)
 Male13 738 (42.30)8205 (39.12)5050 (48.79)2095 (50.53)
 Female18 738 (57.70)12 768 (60.88)5300 (51.21)2051 (49.47)
No conditions, mean±SD3.34±2.612.82±2.374.25±2.754.87±2.73
No conditions—no (%)
 03584 (11.04)3008 (14.34)551 (5.32)126 (3.04)
 15928 (18.25)4556 (21.72)1275 (12.32)347 (8.37)
 25438 (16.74)3896 (18.58)1409 (13.61)461 (11.12)
 34283 (13.19)2788 (13.29)1366 (13.20)479 (11.55)
 ≥413 243 (40.78)6725 (32.07)5749 (55.55)2733 (65.92)
Material deprivation—no (%)
 1 (least deprived)4431 (13.64)2888 (13.77)1410 (13.62)526 (12.69)
 24369 (13.45)2883 (13.75)1339 (12.94)517 (12.47)
 34811 (14.81)3125 (14.90)1543 (14.91)580 (13.99)
 45555 (17.10)3708 (17.68)1698 (16.41)610 (14.71)
 5 (Most deprived)6038 (18.59)3910 (18.64)1985 (19.18)667 (16.09)
 Missing data7272 (22.39)4459 (21.26)2375 (22.95)1246 (30.05)
Social deprivation—no (%)
 1 (least deprived)3834 (11.81)2649 (12.63)1070 (10.34)395 (9.53)
 24296 (13.23)2967 (14.15)1201 (11.60)454 (10.95)
 34732 (14.57)3176 (15.14)1441 (13.92)509 (12.28)
 45730 (17.64)3622 (17.27)1968 (19.01)690 (16.64)
 5 (most deprived)6612 (20.36)4100 (19.55)2295 (22.17)852 (20.55)
 Missing data7272 (22.39)4459 (21.26)2375 (22.95)1246 (30.05)
Living environments—no (%)
 Home18 422 (56.72)12 544 (59.81)5587 (53.98)1618 (39.03)
 Private senior residency11 591 (35.69)6953 (33.15)3970 (38.36)2073 (50.00)
 Intermediate facility2463 (7.58)1476 (7.04)793 (7.66)455 (10.97)
No. medications used in past year—no (%)
 0–45523 (17.01)4388 (20.92)1064 (10.28)276 (6.66)
 5–99579 (29.50)6796 (32.40)2545 (24.59)853 (20.57)
 10–148619 (26.54)5477 (26.11)2813 (27.18)1173 (28.29)
 15–195009 (15.42)2686 (12.81)2037 (19.68)942 (22.72)
 20+3746 (11.53)1626 (7.75)1891 (18.27)902 (21.76)
  • *Some individuals had both outcomes (hospitalisation and death), which explains why the total of ‘cases not hospitalised, not dead +cases hospitalised +cases dead’ does not equal the total number of cases. From the 4146 deaths, 2993 occurred among hospitalised cases. From the 1153 other deaths, 668 were in private senior residences, 194 in intermediate facilities and 291 at home.