Menstrual cycle related depressive symptoms and their diurnal fluctuations – an ambulatory assessment study

BMC Women's Health

Table 2 Parameter estimates from multilevel models on cycle-related symptom change across participants

Symptom	Fixed effect cosine function	CI fixed effects	SD random effect cosine function	CI for SD of random effect
PHQ-1: Diminished interest	0.13	[0.06–0.19]*	0.15	[0.02–0.23]*
PHQ-2: Depressed mood	0.16	[0.07–0.24]*	0.29	[0.21–0.37]*
PHQ-3: Sleep problems	0.05	[-0.08–0.17]	0.33	[0.21–0.46]*
PHQ-4: Low energy	0.19	[0.10–0.27]*	0.22	[0.10–0.32]*
PHQ-5: Changed appetite	0.10	[0.00–0.20]*	0.33	[0.24–0.42]*
PHQ-6: Feeling worthless	0.07	[0.01–0.14]*	0.18	[0.11–0.25]*
PHQ-7: Concentration problems	0.07	[-0.01–0.14]	0.23	[0.16–0.31]*
PHQ-8: Reduced movement/ Restlessness	0.07	[0.01–0.12]*	0.19	[0.14–0.24]*
PHQ-9: Suicidal ideation	0.01	[-0.00–0.03]	0.04	[0.01–0.06]*
Sum score	0.84	[0.42–1.21]*	1.24	[0.85–1.64]*

Note: If the random effect values are significantly different from 0 (statistical significance calculated through 95% confidence interval of the variance), it indicated that there were statistically significant between-person differences in cycle-related symptom change measured by the cosine function. CI = 95% confidence interval, SD = Standard deviation, *confidence intervals, that do not include zero are marked as significant

ISSN: 1472-6874