bihourly

The first collection, the one with the oldest data, contains the observations for Maputo (then Lourenco Marques, Campos Rodrigues Observatory) for 1909-60 (bihourly from 1910).

Vital signs were assessed continuously via bedside monitoring and charted bihourly unless patients exhibited signs of clinical deterioration, in which case, more frequent assessments were obtained.

In a double-blind administration, subjects received 200 mg caffeine gum or identical placebo gum bihourly each morning from 1 a.m.

For the symptom-triggered approach, the patient's CIWA-Ar score is determined hourly or bihourly and the medication is administered only when the score is elevated.