Table 1. Mean durations of individual call types in different categories between control and REMSR groups on various developmental days.
| Call types | Day 1 | Day 5 | Day 9 | Day 11 | Day 15 | Day 21 | ||||||
| Control | REMSR | Control | REMSR | Control | REMSR | Control | REMSR | Control | REMSR | Control | REMSR | |
| A | 34 (13, 58) | 28 (11, 49) | 33 (14, 46) | 47 (19, 65)* | 60 (22, 130) | 43 (27, 84) | 60 (13, 130) | 63 (26, 100) | 42 (29, 121) | 41 (14, 52) | 19 (14, 25) | 38 (37, 54) |
| B i | 14 (11, 17) | NF | 15 (10, 34) | 39 (12, 52) | 22 (18, 69) | 17 (13, 29) | 26 (18, 36) | 19 (14, 27) | 18 (13, 29) | 29 (20, 32) | 14 (11, 23) | 39 (26, 51) |
| B ii | 34 (34, 34) | 45 (32, 59) | 35 (30, 69) | 46 (33, 69) | 75 (28, 121) | 47 (25, 57) | 71 (34, 137) | 59 (36, 104)* | 13 (11, 64) | 35 (16, 53) | NF | 60 (32, 88) |
| B iii | NF | NF | 19 (19, 19) | 29 (28, 31) | 48 (43, 49) | NF | 36 (15, 95) | 18 (18, 18) | 36 (36, 36) | NF | NF | NF |
| B iv | 27 (27, 27) | NF | NF | 28 (28, 28) | 24 (10, 35) | 26 (11, 38) | 22 (13, 47) | 15 (14, 25) | 16 (10, 45) | 30 (11, 60) | 21 (14, 28) | 25 (25, 25) |
| C | 60 (50, 97) | NF | 40 (33, 46) | 71 (55, 90) | 72 (13, 110) | 46 (33, 93) | 72 (13, 110) | 63 (23, 89)* | 38 (12, 89) | 60 (32, 99) | 21 (21, 21) | 40 (22, 60) |
| D i | 58 (58, 58) | NF | 68 (68, 68) | 68 (68, 68) | 50 (40, 60) | 63 (61, 66) | 64 (38, 99) | 51 (43, 93) | 48 (19, 137) | 47 (39, 54) | NF | 62 (62, 62) |
| D ii | NF | NF | NF | NF | 93 (64, 220) | 311 (311, 311) | 54 (51, 56) | NF | 39 (39, 39) | 74 (74, 74) | NF | NF |
The values are presented in msec and are tabulated as median (minimum, maximum) in bracket. NF stands for calls that were ‘not found’. A denotes category consisting of flat calls; B having upwards (i), downwards (ii), U shaped (iii), and inverted-U shaped (iv); C is sum of 2 and 3 syllable and D contains wave (i) and complex calls (ii). The significant changes on comparison of calls between control and REMSR are depicted in ‘*’. The level of significance is p<0.05.