| Risk Factors |
| n | References |
| Distress of COVID-19-related Experiences | Severity | 17 | [5] [7] [12] [13] [16] [17] [20] [21] [24] [27] [30] [31] [33] [37] [38] [42] [43] |
| Income | Decreased/Lower/Lost | 8 | [9] [10] [12] [15] [17] [25] [30] [45] |
| Middle | 1 | [14] | |
| Higher | 1 | [24] | |
| Anxiety |
| 6 | [18] [24] [27] [37] [38] [40] |
| Employed | Unemployment/Unemployed | 6 | [9] [12] [17] [25] [28] [45] |
| Full Time | 1 | [14] | |
| History of Mental Illness |
| 5 | [15] [16] [25] [39] [41] |
| Social Support | Lower/Lack of/Cancellation | 5 | [12] [41] [45] [46] [49] |
| Exercise/Physical Activity | Lack of/Decreased/Not Regular | 4 | [9] [11] [20] [30] |
| The Week of Gestation | The First Trimester/Earlier | 4 | [5] [9] [17] [38] |
| Elevated/Third Trimester | 3 | [5] [26] [42] | |
| Age | Younger/<30 Years/<35 Years | 4 | [5] [12] [14] [20] [25] |
| 26 - 34 Years (Compared to 17 - 25 Years) | 1 | [34] | |
| Older (≥35 Years)/Advanced) | 2 | [16] [37] | |
| Plan of Pregnancy | Unplanned | 3 | [9] [25] [46] |
| Smoking |
| 3 | [9] [39] [26] |
| Sleeping | Insomnia/Poor | 3 | [19] [20] [44] |
| Family Function | Dysfunction | 3 | [9] [13] [48] |
| Time Spent on the Internet or Social Media | Increased | 3 | [5] [20] [24] |
| Health | Concerned/poor | 3 | [22] [27] [39] |
| Educational Level | Lower | 3 | [16] [30] [40] |
| Higher | 2 | [20] [38] | |
| Stress | Higher | 2 | [16] [17] |
| Life event | Stressful/Recently Suffered the Loss of a Loved One | 2 | [28] [44] |
| High-risk Pregnancy | Having | 2 | [17] [47] |
| Pregnancy Complications | Vaginal Bleeding | 2 | [9] [23] |
| Partner | Unmarried/Divorced/Widowed | 2 | [9] [12] |
| Sexual Function | Low/Sexual Dysfunction | 2 | [29] [45] |
| Living | Village/Countryside/Counties | 2 | [5] [34] |
| Parity | First/Primiparous | 2 | [5] [14] |
| Second or More | 1 | [20] | |
| Second | 1 | [34] | |
| Weight | Higher/Obesity | 2 | [41] [48] |
| Underweight | 1 | [14] | |
| Intimate Partner Violence | Having | 1 | [7] |
| PTSD |
| 1 | [24] |
| Sick Family Member | Having | 1 | [28] |
| Coping | The Coping Strategy of Avoidance | 1 | [35] |
| Attachment to the Unborn Baby | Reduced | 1 | [43] |
| Relatives Were Diagnosed with COVID-19 | Having | 1 | [45] |
| Levels of Loneliness | Higher | 1 | [49] |
| Worrying about Their Baby’s Health |
| 1 | [34] |
| Health Insurance | Having | 1 | [20] |
| None | 1 | [22] | |
| Going to Their Hometown for Delivery | Restriction | 1 | [6] |
| High Epidemic Regions |
| 1 | [6] |
| Alcohol Consumption | Yes | 1 | [9] |
| Hygienic Practices | High | 1 | [38] |
| Children | Fewer | 1 | [17] |
| With 1 - 2 (Compared to No Children) | 1 | [34] | |
| Living Space | Appropriate | 1 | [14] |
| Maternity Harassment | Experienced | 1 | [32] |