Table 4 Association between perinatal depression and SMS messaging patterns
ANTENATAL DEPRESSION | |||||
Ever vs. never sending an SMS message | |||||
Presence of antenatal depression (n) | Proportion who ever sent an SMS (n (%) | Relative Risk (95% CI) | p-value | Adjusted Relative Riska (95% CI) | p-value |
Yes (n = 163) | 150 (92.0%) | 0.99 (0.98, 1.00) | 0.05* | 0.97 (0.97, 0.98) | < 0.0001* |
No (n = 409) | 384 (93.9%) |  |  |  |  |
Total participant SMS sent | |||||
Presence of antenatal depression (n) | Total SMS Count Median (IQR) | Relative Risk (95% CI) | p-value | Adjusted Relative Riska (95% CI) | p-value |
Yes (n = 163) | 14 (5–38) | 0.77 (0.72, 0.82) | < 0.0001* | 0.91 (0.87, 0.96) | < 0.0001* |
No (n = 409) | 25 (8–44) |  |  |  |  |
Total participant long SMS sent | |||||
Presence of antenatal depression (n) | Long SMS Count Median (IQR) | Relative Risk (95% CI) | p-value | Adjusted Relative Riska (95% CI) | p-value |
Yes (n = 163) | 12 (3–28) | 0.81 (0.79, 0.84) | < 0.0001* | 0.92 (0.89, 0.96) | < 0.0001* |
No (n = 409) | 19 (6–34) |  |  |  |  |
PERSISTENT PERINATAL DEPRESSION | |||||
Likelihood of ever versus never sending an SMS message | |||||
Presence of persistent depression (n) | Proportion who ever sent an SMS (n (%) | Relative Risk (95% CI) | p-value | Adjusted Relative Riska (95% CI) | p-value |
Yes (n = 27) | 25 (92.6%) | 1.00 (0.93, 1.07) | 0.91 | 0.96 (0.91, 1.00) | 0.08 |
No (n = 545) | 509 (93.4%) |  |  |  |  |
Ratio of mean participant SMS counts | |||||
Presence of persistent depression (n) | Total SMS Count Median (IQR) | Relative Risk (95% CI) | p-value | Adjusted Relative Riska (95% CI) | p-value |
Yes (n = 27) | 15 (8–35) | 0.74 (0.54, 1.01) | 0.05 | 0.81 (0.70, 0.94) | 0.005* |
No (n = 545) | 22 (7–44) |  |  |  |  |
Ratio of mean participant long SMS messages sent | |||||
Presence of persistent depression (n) | Long SMS Count Median (IQR) | Relative Risk (95% CI) | p-value | Adjusted Relative Riska (95% CI) | p-value |
Yes (n = 27) | 13 (7–31) | 0.78 (0.62, 0.97) | 0.03* | 0.86 (0.76, 0.98) | 0.02* |
No (n = 545) | 17 (5–33) |  |  |  |  |