Reliability of HK-NCI
| HK-NCI total and subscores | Mean±SD | Internal consistency | Test–retest reliability* |
| Cronbach’s α | Intra-class correlation (95% CI) | ||
| HK-NCI-Total | 3.8±0.5 | 0.813 | 0.701 (0.497 to 0.832) |
| HK-NCI-SC | 3.5±0.7 | 0.763 | – |
| HK-NCI-NB | 4.2±0.5 | 0.715 | – |
*Sample size for test–retest reliability was 38.
HK-NCI, Hong Kong version of Neighbourhood Cohesion Instrument (15 items); NB, neighbourhood belonging (items 9, 10, 11, 12, 13, 14 and 15); SC, social cohesion (items 1, 2, 3, 4, 5, 6, 7 and 8).