Table 3.
Factor loading matrix for the PSQI between mid- and late pregnancy groups (n = 281)
| Mid-pregnancy | Late-pregnancy | |||
|---|---|---|---|---|
| Component | Factor 1 Quantitative sleep quality | Factor 2 Subjective sleep quality | Factor 1 Perceived sleep quality | Factor 2 Daily disturbance |
| Subjective sleep quality | .253 | .750 | .570 | .334 |
| Sleep latency | .445 | .327 | .546 | .225 |
| Sleep duration | .677 | .008 | .599 | -.025 |
| Sleep efficiency | .857 | -.093 | .824 | -.207 |
| Sleep disturbance | -.045 | .420 | .384 | .449 |
| Daytime dysfunction | -.016 | .354 | -.097 | .628 |
| % of total variance | 24.29 | 16.32 | 30.30 | 13.36 |
PSQI Pittsburgh Sleep Quality Index, Factor loadings ≥ 0.4 are shown in bold