TABLE 1.
Basic characteristics of nurses working consecutive night shifts and nurses having worked past night shifts.
| Characteristics | Nurses with consecutive night shifts (n = 512) | Nurses with past night shifts (n = 174) | p |
| Duration of night shifts, years, median (Q1, Q3) | 4.00 (3.00, 9.00) | – | – |
| Duration of night shifts in the past, years, median (Q1, Q3) | – | 11.00 (5.00, 17.00) | – |
| Duration of total nursing work, years, median (Q1, Q3) | 4.00 (3.00, 9.00) | 14.50 (6.50, 24.00) | <0.001 |
| Age, years, median (Q1, Q3) | 27.00 (25.00, 31.00) | 35.00 (29.00, 43.00) | <0.001 |
| Any religion, n (%) | 15 (2.98%) | 7 (4.05%) | 0.43 |
| Educational level, n (%) | 0.05 | ||
| Technical secondary degree | 2 (0.39%) | 3 (1.75%) | |
| Junior or undergraduate degree | 500 (97.66%) | 161 (94.15%) | |
| Graduate degree | 10 (1.95%) | 7 (4.09%) | |
| Married, n (%) | 252 (49.22%) | 148 (85.06%) | <0.001 |
| Living environment, n (%) | <0.001 | ||
| Live alone | 137 (26.92%) | 11 (6.36%) | |
| Live with parents or children | 295 (57.96%) | 153 (88.44%) | |
| Other | 77 (15.13%) | 9 (5.20%) | |
| Annual family income level, n (%) | <0.001 | ||
| Less than 50,000 yuan | 99 (19.84%) | 17 (10.00%) | |
| 50,001∼100, 000 yuan | 235 (47.09%) | 60 (35.29%) | |
| 100,001∼200, 000 yuan | 138 (27.66%) | 74 (43.53%) | |
| More than 200, 000 yuan | 27 (5.41%) | 19 (11.18%) | |
| Current alcohol consumer, n (%) | 42 (8.20%) | 21 (12.07%) | 0.13 |
| Current cigarette smoker, n (%) | 3 (0.37%) | 0 (0.00%) | 1.00 |
| Hypertension, n (%) | 9 (1.76%) | 8 (4.60%) | 0.07 |
| Hyperlipidemia, n (%) | 24 (4.69%) | 23 (13.22%) | <0.001 |
| Diabetes, n (%) | 4 (0.78%) | 1 (0.57%) | 1.00 |
| Menopause, n (%) | 2 (0.49%) | 3 (1.89%) | 0.27 |
| Pittsburgh Sleep Quality Index (PSQI) | |||
| PSQI global score, median (Q1, Q3) | 6.00 (5.00, 8.00) | 6.00 (4.00, 8.00) | 0.04 |
| Poor sleep quality, n (%)a | 318 (62.11%) | 97 (55.75%) | 0.14 |
aPSQI score > 5. PSQI, Pittsburgh Sleep Quality Index.