“…Another study found that larger population size significantly associated with higher performance of seven essential services (86) but not with performance of essential services 6, 7, or 8. In 2013, Bhandari replicated an earlier study (117) and found that population size positively and significantly associated with performance of essential services 1, 2, 5, 6, and 10 compared with just service 6 in the original study (21). Bhandari also retested a model published in 2006 (86) and found a positive and significant association between population size and performance of essential services 1, 2, 6, and 10 compared with services 1 through 6 in the earlier study.…”