Process indicators
Between ages 2 and 3 years, of 331 mothers allocated to the intervention group, 281 (85%) mothers completed Stage 1 telephone support session, 250 (76%) completed Stage 2 telephone session, and 210 (63%) completed Stage 3 telephone session. Further, 183 (55%) mothers completed all 3 sessions, 72 (22%) completed 2 sessions, 48 (15%) received 1 session, and 28 (8%) mothers did not complete any session. We were unable to determine the number of mothers who did not receive any SMS support.