Conclusions  Electronic self-monitoring of mood in depression appears to be a valid measure of mood in contrast to self-monitoring of mood in mania .
Background Various paper-based mood charting instruments are used in the monitoring of symptoms in bipolar disorder .
During recent years an increasing number of electronic self-monitoring tools have been developed .
The objectives of this systematic review were 1 ) to evaluate the validity of electronic self-monitoring tools as a method of evaluating mood compared to clinical rating scales for depression and mania and 2 ) to investigate the effect of electronic self-monitoring tools on clinical ly relevant outcomes in bipolar disorder .
There are yet few studies on the effect of  electronic self-monitoring of mood  in bipolar disorder .
Patient compliance with paper and electronic diaries.
Paper diaries are commonly used in health care and clinical research to assess patient experiences . There is concern that patients do not comply with diary protocol s , possibly invalidating the benefit of diary data . Compliance with paper diaries was examined with a paper diary and with an electronic diary that incorporated compliance-enhancing features .  Participants were chronic pain patients and they were assigned to use either a paper diary instrumented to track diary use or an electronic diary that time-stamped entries . Participants were instructed to make three pain entries per day at predetermined times for 21 consecutive days . Primary outcome measures were reported vs actual compliance with paper diaries and actual compliance with paper diaries ( defined by comparing the written times and the electronically-recorded times of diary use ) . Actual compliance was recorded by the electronic diary . Participants su bmi tted diary cards corresponding to 90 % of assigned times ( + /-15 min ) . However , electronic records indicated that actual compliance was only 11 % , indicating a high level of faked compliance . On 32 % of all study days the paper diary binder was not opened , yet reported compliance for these days exceeded 90 % . For the electronic diary , the actual compliance rate was 94 % . In summary , participants with chronic pain enrolled in a study for research were not compliant with paper diaries but were compliant with an electronic diary with enhanced compliance features . The findings call into question the use of paper diaries and suggest that electronic diaries with compliance-enhancing features are a more effective way of collecting diary information
Conclusions  Electronic self-monitoring of mood in depression appears to be a valid measure of mood in contrast to self-monitoring of mood in mania .
Background Various paper-based mood charting instruments are used in the monitoring of symptoms in bipolar disorder .
During recent years an increasing number of electronic self-monitoring tools have been developed .
The objectives of this systematic review were 1 ) to evaluate the validity of electronic self-monitoring tools as a method of evaluating mood compared to clinical rating scales for depression and mania and 2 ) to investigate the effect of electronic self-monitoring tools on clinical ly relevant outcomes in bipolar disorder .
There are yet few studies on the effect of  electronic self-monitoring of mood  in bipolar disorder .