PMID- 155892
OWN - NLM
STAT- MEDLINE
DCOM- 19790725
LR  - 20190503
IS  - 0040-6376 (Print)
IS  - 1468-3296 (Electronic)
IS  - 0040-6376 (Linking)
VI  - 34
IP  - 1
DP  - 1979 Feb
TI  - An evaluation of the mini-Wright peak flow meter.
PG  - 79-81
AB  - The mini-Wright peak flow meter (MPFM) has been evaluated, and the results 
      obtained from it show a strong positive correlation (r=0.970) with the Wright's 
      peak flow meter (PFM). MPFM measurements, however, were biased to be about 38 
      1/min higher than PFM measurements (95% confidence limits 31.01/min to 
      45.01/min). Between instrument variation was found (F--ratio 3.67 with 9 and 81 
      degrees of freedom: P less than 0.001). In practice this did not appreciably 
      affect individual measurements greatly as 95% confidence limits on any individual 
      measurements were increased from +/-24 1/min to +/-27 1/min. There was no 
      significant day-to-day variability in measurements obtained with individual 
      instruments. The MPFM is a pocket-sized, simple, cheap, and robust instrument for 
      following changes in ventilatory function. In clinical trails and surveys, 
      however, both the bias in favour of the MPFM compared to the PFM and 
      inter-machine variation must be taken into account. As the manufacturers have 
      altered the scale to remove the bias since this study was performed, it will be 
      important to know whether the original or the modified meter is being used in 
      future studies.
FAU - Perks, W H
AU  - Perks WH
FAU - Tams, I P
AU  - Tams IP
FAU - Thompson, D A
AU  - Thompson DA
FAU - Prowse, K
AU  - Prowse K
LA  - eng
PT  - Comparative Study
PT  - Journal Article
PL  - England
TA  - Thorax
JT  - Thorax
JID - 0417353
SB  - IM
MH  - Evaluation Studies as Topic
MH  - *Forced Expiratory Flow Rates
MH  - Humans
MH  - *Peak Expiratory Flow Rate
MH  - Respiratory Function Tests/instrumentation
MH  - *Rheology
PMC - PMC471012
EDAT- 1979/02/01 00:00
MHDA- 1979/02/01 00:01
PMCR- 1979/02/01
CRDT- 1979/02/01 00:00
PHST- 1979/02/01 00:00 [pubmed]
PHST- 1979/02/01 00:01 [medline]
PHST- 1979/02/01 00:00 [entrez]
PHST- 1979/02/01 00:00 [pmc-release]
AID - 10.1136/thx.34.1.79 [doi]
PST - ppublish
SO  - Thorax. 1979 Feb;34(1):79-81. doi: 10.1136/thx.34.1.79.