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. 2021 Sep 17;9(1):233–244. doi: 10.1002/nop2.1057

TABLE 2.

Prevalence of sleep medication (prescribed and over the counter) and melatonin use by independent variables among Norwegian nurses (N = 2,798)

Independent variables Prescribed sleep medication (N = 210, 7.5%) Sleep medication over the counter (N = 130, 4.6%) Melatonin (N = 56, 2.0%)
% (N) p‐value a % (N) p‐value a % (N) p‐value a
Sex
Female 7.6 (191) .703 4.7 (118) .619 1.9 (47) .111
Male 6.9 (19) 4.0 (11) 3.3 (9)
Age (years)
21–25 3.9 (30) <.001 3.2 (25) .081 1.2 (9) .001
26–30 6.0 (42) 5.0 (35) 2.0 (14)
31–35 7.5 (41) 4.4 (24) 1.3 (7)
36–40 8.7 (28) 5.0 (16) 1.9 (6)
>40 15.5 (69) 6.7 (30) 4.5 (20)
Marital status
Partner 6.7 (128) .015 4.6 (87) .652 1.6 (31) .029
Single 9.3 (81) 5.0 (43) 2.9 (25)
Children living at home
Yes 6.6 (72) .222 3.4 (37) .011 2.5 (27) .177
No 7.8 (123) 5.5 (86) 1.7 (27)
Work experience (years)
<1 5.1 (39) .003 3.2 (25) .012 1.7 (13) .914
1–2 7.2 (53) 5.0 (37) 2.2 (16)
3–5 7.7 (37) 6.2 (30) 2.1 (10)
6–10 9.1 (54) 3.9 (23) 2.4 (14)
>10 12.9 (23) 8.4 (15) 1.7 (3)
Average hours worked per week
≤20 9.4 (15) .119 5.0 (8) .736 1.3 (2) .158
20.1–30 8.8 (56) 4.9 (31) 2.7 (17)
31.1–37.5 6.2 (85) 4.2 (57) 1.5 (21)
37.6–40 8.4 (37) 5.7 (25) 3.2 (14)
>40 5.2 (7) 5.2 (7) 1.5 (2)
Type of workplace
Acute care 171 (7.8) .303 115 (5.2) .019 42 (1.9) .965
Community‐based care 27 (6.3) 11 (2.6) 8 (1.9)
Shift work schedule
Schedule without night work 7.9 (78) .487 4.5 (44) .680 2.5 (25) .132
Schedule with night work 7.2 (127) 4.8 (85) 1.7 (30)
Number of night shifts
0 8.7 (60) .001 3.8 (26) .281 2.5 (17) .180
1–20 6.8 (64) 4.6 (43) 2.0 (19)
21–40 5.7 (35) 5.4 (33) 1.6 (10)
41–60 5.9 (15) 3.5 (9) 0.4 (1)
>60 13.4 (34) 6.7 (17) 3.2 (8)
Number of quick returns
0 10.0 (31) .083 3.5 (11) .631 2.3 (7) .855
1–20 5.8 (52) 4.4 (39) 1.8 (16)
21–40 6.5 (37) 5.1 (29) 1.9 (11)
41–60 8.1 (44) 5.7 (31) 1.7 (9)
>60 8.8 (30) 4.4 (15) 2.6 (9)
Sleep duration
<6 hr 21.6 (36) <.001 11.4 (19) <.001 7.8 (13) <.001
6‐<7 hr 9.2 (73) 6.3 (50) 2.5 (20)
7‐<8 hr 5.7 (67) 3.5 (42) 1.3 (15)
8–9 hr 5.1 (31) 2.8 (17) 1.3 (8)
>9 hr 8.0 (2) 4.0 (1) 0.0 (0)
Excessive daytime sleepiness
No 7.2 (146) .280 4.2 (85) .055 1.9 (38) .410
Yes 8.4 (64) 5.9 (45) 2.4 (18)
Shift work disorder (SWD)
No 4.9 (85) <.001 2.4 (44) <.001 1.2 (22) <.001
Yes 13.0 (125) 8.9 (86) 3.5 (34)
Insomnia
No 2.5 (34) <.001 1.7 (23) <.001 0.5 (7) <.001
Yes 12.1 (176) 7.4 (107) 3.4 (49)
Anxiety
No 5.4 (119) <.001 3.6 (80) <.001 1.5 (33) <.001
Yes 16.2 (91) 8.7 (49) 4.1 (23)
Depression
No 6.4 (162) <.001 4.3 (109) .006 1.9 (47) .051
Yes 19.7 (48) 8.2 (20) 3.7 (9)
a

p‐value from a Pearson's chi‐squared test.