|
Binns et al. 2006 Australia [2]
|
Longitudinal
|
Perth, Western Australia
|
- Explore determinants of breastfeeding
|
- Approx. 60% (n = 1143) using manual pumps in both studies
|
Large study
|
|
PIFS I n = 556
|
- Measure and compare prevalence of expressing 1992-93 and 2002-03
|
- Use of electric pumps increased by 31% in 10 years
|
Comparison of similar groups 10 years apart
|
|
1992–93
| | |
Actual figures not given
|
|
PIFS II n = 587
| | |
Public patients only, perhaps not representative
|
|
2002–03
| | | |
|
Recruited in hospital in early post-partum period
| | | |
|
Labiner-Wolfe et al. 2008 USA [3]
|
Longitudinal
|
National study
|
- Reasons why women express
|
- Birth to 1.5 -4.5 months
|
Large sample size
|
|
n = 4606
|
- Amount and prevalence of milk expression
|
80% (105/1302) battery or electric 44% (573/1302) manual pump 14% (18/1302) hand
|
3 mailed questionnaires seeking information re. feeding in previous fortnight - recall bias unlikely
|
|
2005-2007 IFPS II
|
- Associated socio-demographic factors
|
- Previous 3 months to 6.5-9.5 months
|
Detailed information re. methods of expression over time
|
|
Mail survey 2, 5 and 7 months postpartum
| |
73% (39/529) battery or electric) 33% (18/529) manual pump 13% (69/529) hand
|
Not nationally representative, older, more educated, more likely to be white, employed, higher income, less likely to smoke. More likely to breastfeed and for longer
|
|
Ohyama et al 2010 Japan [31]
|
Sequential crossover
|
Yokohama, Kanagawa
|
- Comparison of effectiveness and comfort of manual and electric breast expression in first 48 hours after birth
|
- Manual expressing associated with greater milk volume: net milk yield per woman 2 ml.
|
Limited other exploration of this area
|
|
n = 11
| |
- Manual expression 2 ml (median; range: 0-12.6 ml.)
|
Small study
|
|
2003-2004
| |
- Electric expression 0.6 ml. (0-7.2 ml.) (P < 0.05).
|
Infant gestation and health status not indicated
|
|
Mothers of infants admitted to neonatal intensive care recruited in hospital soon after birth
| |
- Manual pump associated with more reports of pain
| |
|
Flaherman et al 2012 USA [32]
|
RCT
|
San Francisco & Sacramento, California
|
Comparison of hand and electric expression measured;
|
- At 2 months mothers assigned to hand expressing were more likely to be breastfeeding (97%, 47/48) than mothers assigned to breast pumping (73%,35/48) (RR:1.32, 95% CI 1.01,1.73)
|
Limited other exploration of this area, no previous studies linking type of expressing to breastfeeding outcomes
|
|
n = 68
|
- Milk transfer
| |
Thorough discussion
|
|
2007-2009
|
- Breast pain
| |
Small study, final outcome assessment based on 48 participants
|
|
Recruited12-36 hours after birth
|
- Breastfeeding confidence
| |
Possible bias- recruited infants experiencing feeding difficulty
|
| |
- Breast milk expression experience
| |
No control group
|
| |
- Breastfeeding rates at 2 months
| | |
|
Becker et al. 2011 UK [30]
|
Systematic review
|
International
|
- Assessment and review of randomised and quasi randomised trials comparing methods of milk expression any time after birth and crossover trials commencing at least 28 days after birth
|
- More milk with relaxation tape
|
Systematic review
|
| | |
n = 642 women from 23 studies
| |
- No difference in mean vol. with simultaneous or sequential pumping, or between manual and electric pumps studied
|
Most studies specifically related to the care of the pre-term infant
|
