Table 2. Clustering of cervical cancer incidence of Indian states based on clustering of registries.

State/group of states*	2-Clustering		3-Clustering			4-Clustering
	1(low, late)	2(high, early)	1(low, late)	2(high, early)	3(interm., late)	1(low, late)	2(high, early)	3(interm., late)	4(very low, early)
Andhra Pradesh	●		●			●
Assam	●●●		●●●			●●			●
Delhi	●				●			●
Gujarat+Dadra and Nagar Haveli	●		●			●
Karnataka	●				●			●
Kerala +Lakshadweep	●●		●●			●●
Madhya Pradesh	●				●			●
Maharashtra	●●●●●●	●	●●●●		●●●	●●●●		●●●
Manipur	●●		●●			●●
Other North Eastern states†	●●●●●	●●●●	●●●●	●●●●	●	●●●●	●●●●	●
Punjab +Chandigarh	●				●			●
Sikkim	●		●			●
Tamil Nadu +Puducherry	●	●		●	●		●	●
West Bengal +Andaman and Nicobar Islands	●		●			●

Each circle represents the count of one registry being assigned to the corresponding cluster. Grey shading represents the cluster including the highest number of registries, either exclusively or in a draw with another cluster.

Cluster labels and the corresponding patterns of maximum incidence and maximum incidence age group given in the second row were defined in the third, sixth, and eighth columns of Table 1, respectively.

^*States/or groups of states were defined as reported in the 2006 National Behaviour Surveillance Survey of the National AIDS Control Organization of India (National Behavioural Surveillance Survey: General Population, 2006).

^†Other North Eastern states included Arunachal Pradesh, Nagaland, Meghalaya, Mizoram, and Tripura.