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. 2020 Sep 24;18:70. doi: 10.1186/s12960-020-00515-6

Table 2.

Results of pairwise comparisons between groups’ post hoc analyses for questions found to have a significant difference between groups in the chi-square analysis

Category Question Pearson X2 (6) Cramer’s V (Approx. Sig) Response options Comparisons of column proportions (z-test)
Day Shift Evening shift Night shift Rotating shift
Physical health I feel I have a lot of energy (n = 912) 29.098 .179 (.000) Strongly disagree/disagree 34 (11.6%) 7 (14.3%)

13 (44.8%)

Day****

Evening*

Rotating****

68 (12.5%)
Neutral 80 (27.4%) 8 (16.3%) 5 (17.2%) 154 (28.4%)
Strongly agree/agree 178 (61.0%)

34 (69.4%)

Day*

11 (38.0%) 320 (61.1%)
Physical health I expect my health to get better (n = 896) 15.052 .092 (.020) Strongly disagree/disagree 33 (11.5%) 3 (6.3%) 6 (22.2%) 59 (11.0%)
Neutral 87 (30.3%) 11 (22.9%) 14 (51.9%) 163 (30.5%)
Strongly agree/agree

167 (58.2%)

Night**

34 (70.8%)

Night***

7 (25.9%)

312 (58.4%)

Night**

Physical health Overall, I am satisfied with my health (n = 909) 15.430 .092 (.017) Strongly disagree/disagree 30 (10.3%) 3 (6.1%) 5 (17.2%) 69 (12.8%)
Neutral 64 (21.9%) 10 (20.4%)

13 (44.8%)

Day*

Rotating**

106 (19.7%)
Strongly agree/agree

198 (67.8%)

Night**

36 (73.5%)

Night*

11 (37.9%)

364 (67.5%)

Night**

Health conditions Presence of neck /back ache (n = 916) 22.714 .111 (.001) Regular/often/persistent 79 (27.0%) 15 (30.6%)

16 (55.2%)

Day**

196 (36.0%)

Day*

Sometimes/infrequently

194 (66.2%)

Night*

25 (51.0%) 12 (41.4%) 311 (57.1%)
Never 20 (6.8%)

9 (18.4%)

Day*

Rotating*

1 (34.4%) 38 (7.0%)
Health conditions Incidence of fatigue or low energy (n = 909) 12.713 .084 (.048) Regular/often/persistent 63 (21.6%) 12 (24.5%)

14 (48.3%)

Day**

Rotating*

123 (22.8%)
Sometimes/infrequently

204 (70.1%)

Night**

35 (71.4%) 12 (41.4%)

371 (68.7%)

Night*

Never 24 (8.2%) 2 (4.1%) 3 (10.3%) 46 (8.5%)
Mental/emotional heath I have high self-esteem/feel happy with myself, I am a happy person (n = 917) 14.238 .088 (.027) Strongly disagree/disagree 15 (5.1%) 2 (4.1%) 5 (17.2%) 33 (6.0%)
Neutral 54 (18.4%) 6 (12.2%) 9 (31.0%) 120 (22.0%)
Strongly agree/agree

224 (76.5%)

Night*

41 (83.7%)

Night*

15 (51.7%) 393 (72.0%)
Mental/emotional heath I have a good level of motivation (n = 915) 16.637 .095 (.011) Strongly disagree/disagree 8 (2.7%) 0 (0.0%) 3 (10.3%) 25 (5.0%)
Neutral 48 (16.4%) 8 (16.3%)

11 (38.0%)

Day*

Rotating*

98 (18.0%)
Strongly agree/agree

237 (80.9%)

Night**

41 (83.7%)

Night*

15 (51.7%)

421 (77.4%)

Night**

Mental/emotional heath I have difficulty falling or staying asleep (n = 912) 14.622 090 (.023) Strongly disagree/disagree

147 (50.1%)

Night*

28 (58.3%)

Night**

6 (21.1%)

253 (46.5%)

Night*

Neutral 45 (15.5%) 9 (18.8) 10 (34.5%) 98 (18.0%)
Strongly agree/agree 99 (30.4%) 11 (22.9%) 13 (44.8%) 193 (35.5%)
Quality of life Your physical appearance (n = 916) 23.572 .093 (.023) Terrible 3 (1.0%) 1 (2.1%)

3 (10.3%)

Day**

14 (2.6%)
Unhappy 28 (9.6%) 1 (2.1%) 3 (10.3%) 40 (7.3%)
Mixed 83 (28.3%) 9 (18.8%) 9 (31.0%) 134 (24.5%)
Satisfied 109 (37.2%) 18 (37.5%) 11 (38.0%) 221 (40.5%)
Happy 70 (23.9%)

19 (39.6%)

Night*

3 (10.3%) 137 (25.1%)
Heath behavior I do exercise three times a week for at least 20 minutes each time (n = 917) 14.221 .088 (.027) Never 23 (7.8%) 5 (10.2%)

8 (27.6%)

Day**

Rotating*

58 (10.6%)
Sometimes/infrequently 154 (52.6%) 22 (44.9%) 13 (44.8%) 298 (54.6%)
Regular/often/persistent 116 (39.6%) 22 (44.9%) 8 (27.6%) 190 (34.8%)
Heath behavior I get a good sleep at night (7-8 hours of sleep) (n = 912) 31.503 .131 (.000) Never 25 (8.6%) 8 (16.3%) 6 (20.7%) 60 (11.0%)
Sometimes/infrequently 134 (46.2%) 14 (28.6%)

20 (69.0%)

Evening**

301 (55.3%)

Evening**

Regular/often/persistent

131 (45.2%)

Night**

Rotating**

27 (55.1%)

Night***

Rotating*

3 (10.3%) 183 (33.6%)
Heath behavior I visit my doctor for routine checkup (n = 914) 13.116 .085 (.041) Never 18 (61.6%) 3 (6.1%) 2 (6.9%) 36 (66.2%)
Sometimes/infrequently 95 (32.5%) 20 (40.8%) 11 (37.9%)

244 (44.9%)

Day**

Regular/often/persistent

179 (61.3%)

Rotating**

26 (53.1%) 16 (55.2%)s 264 (48.5%)

Note: Results are based on two-sided z-tests. Cells in italics indicate significant differences between groups. For each significant pair, the group with the smaller proportion is indicted in the column of the group with the larger column proportion. For example, in the first row, caregivers’ working day, evening, or day/evening/night shifts answered “Strongly disagree/disagree” to the question “I feel that I have a lot of energy” significantly fewer times than those working the night shift. Shift types and responses to questions were categorized by how caregivers responded these specific questions in the survey. Significance level: *.05., **.01, ***.001, ****.00001