Thailand special recruitment track of medical students: a series of annual cross-sectional surveys on the new graduates between 2010 and 2012

Table 4 Key attributes and odds ratio of intention to fulfil the 3-year mandatory service: a multivariable logistic regression with marginal effects

	2010			2011			2012
	Odds ratio (absolute margins)^$	95% Confidence interval	P value	Odds ratio (absolute margins)^$	95% Confidence interval	P value	Odds ratio (absolute margins)^$	95% Confidence interval	P value
Special track recruitment	2.23 (0.12)	1.08-4.59	0.030*	2.45 (0.10)	1.38-4.33	0.002**	2.46 (0.15)**	1.38-4.40	0.002**
Location of medical school outside Bangkok	1.12 (0.02)	0.62-2.03	0.705	0.59 (−0.06)	0.34-1.00	0.050	0.94 (−0.01)	0.57-1.52	0.789
Location of residence during ages 1 to 15 years old outside Bangkok	1.71 (0.08)	0.71-4.13	0.232	1.10 (0.01)	0.47-2.57	0.826	0.98 (−0.00)	0.50-1.91	0.951
Location of current residence outside Bangkok	0.70 (−0.05)	0.26-1.89	0.484	1.73 (0.06)	0.69-4.33	0.244	1.48 (0.06)	0.71-3.09	0.295
Location of secondary school outside Bangkok	1.15 (0.02)	0.54-2.42	0.722	1.16 (0.02)	0.55-2.47	0.699	0.94 (−0.01)	0.53-1.66	0.825

The goodness of fit using the Hosmer and Lemeshow test showed a Pearson Chi-square and its P value as follows: 28.15 (P value = 0.030), 8.27 (0.94) and 30.26 (0.025) for the 2010, 2011, and 2012 batch, respectively. ^$Absolute margins are the absolute effects (probabilities) of intention to fulfil the 3-year obligations given the particular variable compared to the probabilities without that variable. For instance, in the 2010 batch, graduates from special track had 12% higher probabilities to fulfil the 3-year obligations than those from the normal track. *, Statistical significance at 95% level of confidence; **, statistical significance at 99% level of confidence.

ISSN: 1478-4491