(I) Health units	(J) Health units	Mean Difference (I-J)	Std. Error	Sig.	95% Confidence Interval
(I) Health units	(J) Health units	Mean Difference (I-J)	Std. Error	Sig.	Lower Bound	Upper Bound
Under 20	Between 21 - 40	9.957^*	3.3104	0.010	1.876	18.038
Under 20	Over 41	30.216^*	3.4260	0.000	21.853	38.580
Between 21 - 40	Under 20	−9.957^*	3.3104	0.010	−18.038	−1.876
Between 21 - 40	Over 41	20.259^*	3.0561	0.000	12.799	27.720
Continued
Over 41 health units	Under 20	−30.216^*	3.4260	0.000	−38.580	−21.853
Over 41 health units	Between 21 - 40	−20.259^*	3.0561	0.000	−27.720	−12.799