Table 2.
Assessment of study quality for studies included in meta-analysis
| Study ID | Randomisation | Blinding | Outcome measure: Blood pressure | Loss of follow up | Funding source |
| Kandziora J 1988 (Study 1), [11] | + | ++ | Primary, Mean of 2 readings each standing + supine | Unclear | - |
| Auer et al. 1990, [12] | + | ++ | Primary, Mean standing + supine | Unclear | - |
| Vorberg & Schneider 1990, [13] | + | ++ | Primary, Mean standing + supine | G: 0%, C: 0% | - |
| Holzgartner et al. 1992, [14] | + | ++ | Secondary, Unclear | G: 4.8%; C: 4.8%; T: 4.8% | - |
| Kiesewetter et al. 1993, [15] | + | ++ | Primary, Riva Rocci method | G: 20%; C: 20%; T: 20% | - |
| Jain et al. 1993, [16] | + | ++ | Primary, Mean of 2 readings after 10 min rest; standard technique (JNC 1988) | Unclear | Industry grant |
| Saradeth et al. 1994, [17] | + | ++ | Primary, Riva Rocci method | G: 2.8%; C: 8.3%; T: 5.6% | - |
| Simons et al. 1995, [18] | + | ++ | Primary, Mean of 2 readings after 5 min rest, phase V diastolic BP | T: 9.7% | Industry grant |
| Steiner et al. 1996, [19] parallel arm | + | ++ | Primary, Unclear, manual | T: 21.2% | - |
| Adler & Holub 1997, [20] | + | ++ | Primary, Sitting digital | T: 8% | Heart & Stroke Foundation |
| Zhang et al. 2000, [21] | + | ++ | Primary, Over 10–30 min until repeated low values were obtained, means of 3 lowest pulse rates + associated BP values | G: 6.7%; C: 13.3%; T: 10% | Industry grant |
+: adequate; ++: double blinding; -: not provided