Table 2 . The geographical location and human development index ranking of studies used in statistical analysis.
| Country | n | HDI* | References |
|---|---|---|---|
| Africa | 2 | 3/4a | Cranston and Burkitt (1975), Burkitt et al. (1980) |
| Australia | 2 | 1 | Birkett et al. (1996), Hovey et al. (2003) |
| Burma | 1 | 4 | Myo-Kin et al. (1994) |
| Canada | 3 | 1 | Burkitt et al. (1980), Vuksan et al. (1999) |
| China | 3 | 2 | Jie et al. (2000), Chen et al. (2008), Bai and Wang (2010) |
| Denmark | 2 | 1 | Maclennan and Jensen (1977), Jensen et al. (1982) |
| Developing countries | 2 | 3/4a | Feachem et al. (1978) |
| Europe and North America | 1 | 1/2b | Feachem et al. (1978) |
| European | 1 | 1b | Mykkänen et al. (1998) |
| Finland | 4 | 1 | Reddy et al. (1975), Reddy et al. (1978), Jensen et al. (1982), Mykkänen et al. (1998) |
| Germany | 1 | 1 | Erhardt et al. (1997) |
| Guatemala | 1 | 3 | Calloway and Kretsch (1978) |
| Holland | 4 | 1 | Stasse-Wolthuis et al. (1980), Van Faassen et al. (1993), Gaillard (2002), Wierdsma et al. (2011) |
| India | 1 | 3 | Shetty and Kurpad (1986) |
| Iran | 1 | 2 | Adibi et al. (2007) |
| Japan | 7 | 1 | Glober et al. (1977), Polprasert and Valencia (1981), Tarida et al. (1984), Saitoh et al. (1999), Danjo et al. (2008), Shinohara et al. (2010), Hotta and Funamizu (2009) |
| Kenya | 1 | 4 | Cranston and Burkitt (1975) |
| New Zealand | 1 | 1 | Pomare et al. (1981) |
| North America | 1 | 1b | Vuksan et al. (2008) |
| Peru | 1 | 2 | Crofts (1975) |
| Singapore | 1 | 1 | Chen et al. (2000) |
| South Africa | 2 | 3 | Burkitt et al. (1972), Walker (1975) |
| Spain | 1 | 1 | Roig et al. (1993) |
| Sweden | 4 | 1 | Reddy et al. (1978), Vinneras (2002), Vinnerås et al. (2006) |
| Thailand | 2 | 2 | Danivat et al. (1988), Schouw et al. (2002) |
| Tonga | 1 | 2 | Pomare et al. (1981) |
| UK | 26 | 1 | Olmsted et al. (1934), Connell et al. (1965), Southgate and Durnin (1970), Burkitt et al. (1972), Goy et al. (1976), Wyman et al. (1978), Prynne and Southgate (1979), Stephen and Cummings (1980), Eastwood et al. (1984), Eastwood et al. (1986), Davies et al. (1986), Cummings et al. (1987), Sandler and Drossman (1987), Cummings et al. (1992), Murphy et al. (1993), Cummings et al. (1996), Lewis and Heaton (1997), Chen et al. (1998), Reddy et al. (1998), Rivero-Marcotegui et al. (1998), Aichbichler et al. (1998), Almeida et al. (1999), Magee et al. (2000), Chaplin et al. (2000), Woodmansey et al. (2004), Silvester et al. (2011) |
| USA | 18 | 1 | Canfield et al. (1963), Watts et al. (1963), Diem and Lentner (1970), Goldsmith and Burkitt (1975), Cummings et al. (1978), Glober et al. (1977), Goldberg et al. (1977), Beyer and Flynn (1978), Reddy et al. (1978), Calloway and Kretsch (1978), Kien et al. (1981), Polprasert and Valencia (1981), Tucker et al. (1981), Schubert et al. (1984), Parker and Gallagher (1988), Zuckerman, et al. (1995), Aichbichler et al. (1998), McRorie et al. (2000) |
*Human Development Index Classifications (UNDP, 2011): 1. Very high, 2. High, 3. Medium, 4. Low.aClassification not available, presumed to be ranking 3 or 4.bClassification not available, presumed to be ranking 1 or 2.