Table 3.
Overview of included studies examining the relationship between sleep and reproductive hormones in pregnant and postpartum women
| Author | Year | Type of study | Sample size (n) | Method of sleep disorder assessment | Method of hormone measurement | Duration of data acquisition | Multiple measurements | Overall ratinga |
|---|---|---|---|---|---|---|---|---|
| Blyton et al [79] | 2002 | Case-control | 31 | Polysomnography, questionnaires | — | Not stated | No | Good |
| Dzaja et al [80] | 2009 | Case-control | 19 | Polysomnography, questionnaires | Blood | 36 weeks of gestation until 12 weeks postpartum | Yes | Fair |
| Wada et al [81] | 2012 | Cohort | 236 | Questionnaires | Blood | 18 months | Yes | Fair |
| Hübner et al [82] | 2013 | Case-control | 109 | Wrist actigraphy, questionnaires | Blood | Course of pregnancy and 8 weeks postpartum | Yes | Fair |
| Crowley et al [83] | 2016 | Cross-sectional | 14 | Actigraphy, questionnaire | Blood | 2 weeks | No | Fair |
| Drozdowicz-Jastrzębska et al [84] | 2017 | Cross-sectional | 84 | Questionnaire | Blood | 24-48 hours after labor | No | Fair |
| Lee et al [85] | 2017 | Case-control | 91 | Retrospective review of polysomnography for cases, questionnaires for controls | Blood | 2 years | Yes | Fair |
| Hantoushzadeh et al [86] | 2019 | Randomized parallel group | 100 | Questionnaire | — | 14 months | Yes | Good |
a
as rated by the NIH Quality Assessment Tools.